diff --git a/src/DictTrie.hpp b/src/DictTrie.hpp
index bed15cf..15de328 100644
--- a/src/DictTrie.hpp
+++ b/src/DictTrie.hpp
@@ -66,9 +66,6 @@ class DictTrie {
   const DictUnit* find(Unicode::const_iterator begin, Unicode::const_iterator end) const {
     return trie_->find(begin, end);
   }
-  bool find(Unicode::const_iterator begin, Unicode::const_iterator end, LocalVector<pair<size_t, const DictUnit*> >& nexts, size_t offset = 0) const {
-    return trie_->find(begin, end, nexts, offset);
-  }
   void find(Unicode::const_iterator begin,
     Unicode::const_iterator end,
     vector<Dag>& res) const {
diff --git a/src/FullSegment.hpp b/src/FullSegment.hpp
index 6c8153f..1a70315 100644
--- a/src/FullSegment.hpp
+++ b/src/FullSegment.hpp
@@ -42,6 +42,23 @@ class FullSegment: public SegmentBase {
     //tmp variables
     int wordLen = 0;
     assert(dictTrie_);
+    vector<struct Dag> dags;
+    dictTrie_->find(begin, end, dags);
+    for (size_t i = 0; i < dags.size(); i++) {
+      for (size_t j = 0; j < dags[i].nexts.size(); j++) {
+        const DictUnit* du = dags[i].nexts[j].second;
+        if (du == NULL) {
+          continue;
+        }
+        wordLen = du->word.size();
+        if (wordLen >= 2 || (dags[i].nexts.size() == 1 && maxIdx <= uIdx)) {
+          res.push_back(du->word);
+        }
+        maxIdx = uIdx + wordLen > maxIdx ? uIdx + wordLen : maxIdx;
+      }
+      uIdx++;
+    }
+    /*
     for (Unicode::const_iterator uItr = begin; uItr != end; uItr++) {
       //find word start from uItr
       if (dictTrie_->find(uItr, end, tRes, 0)) {
@@ -64,6 +81,7 @@ class FullSegment: public SegmentBase {
       }
       ++uIdx;
     }
+    */
 
     return true;
   }
diff --git a/src/MPSegment.hpp b/src/MPSegment.hpp
index 1d9cd16..f35158c 100644
--- a/src/MPSegment.hpp
+++ b/src/MPSegment.hpp
@@ -48,13 +48,13 @@ class MPSegment: public SegmentBase {
   }
 
   bool cut(Unicode::const_iterator begin , Unicode::const_iterator end, vector<Unicode>& res) const {
-    vector<Dag> segmentChars;
+    vector<Dag> dags;
 
-    dictTrie_->find(begin, end, segmentChars);
+    dictTrie_->find(begin, end, dags);
 
-    calcDP_(segmentChars);
+    calcDP_(dags);
 
-    cut_(segmentChars, res);
+    cut_(dags, res);
 
     return true;
   }
@@ -63,12 +63,12 @@ class MPSegment: public SegmentBase {
   }
 
  private:
-  void calcDP_(vector<Dag>& segmentChars) const {
+  void calcDP_(vector<Dag>& dags) const {
     size_t nextPos;
     const DictUnit* p;
     double val;
 
-    for(vector<Dag>::reverse_iterator rit = segmentChars.rbegin(); rit != segmentChars.rend(); rit++) {
+    for(vector<Dag>::reverse_iterator rit = dags.rbegin(); rit != dags.rend(); rit++) {
       rit->pInfo = NULL;
       rit->weight = MIN_DOUBLE;
       assert(!rit->nexts.empty());
@@ -76,8 +76,8 @@ class MPSegment: public SegmentBase {
         nextPos = it->first;
         p = it->second;
         val = 0.0;
-        if(nextPos + 1 < segmentChars.size()) {
-          val += segmentChars[nextPos + 1].weight;
+        if(nextPos + 1 < dags.size()) {
+          val += dags[nextPos + 1].weight;
         }
 
         if(p) {
@@ -92,16 +92,16 @@ class MPSegment: public SegmentBase {
       }
     }
   }
-  void cut_(const vector<Dag>& segmentChars, 
+  void cut_(const vector<Dag>& dags, 
         vector<Unicode>& res) const {
     size_t i = 0;
-    while(i < segmentChars.size()) {
-      const DictUnit* p = segmentChars[i].pInfo;
+    while(i < dags.size()) {
+      const DictUnit* p = dags[i].pInfo;
       if(p) {
         res.push_back(p->word);
         i += p->word.size();
       } else { //single chinese word
-        res.push_back(Unicode(1, segmentChars[i].uniCh));
+        res.push_back(Unicode(1, dags[i].uniCh));
         i++;
       }
     }
diff --git a/src/Trie.hpp b/src/Trie.hpp
index 18e1b82..289787b 100644
--- a/src/Trie.hpp
+++ b/src/Trie.hpp
@@ -93,9 +93,9 @@ class Trie {
       Unicode::value_type ch = *(begin + i);
       ptNode = _base + ch;
       res[i].uniCh = ch;
-      assert(res[i].dag.empty());
+      assert(res[i].nexts.empty());
 
-      res[i].dag.push_back(DagType::value_type(i, ptNode->ptValue));
+      res[i].nexts.push_back(pair<size_t, const DictUnit*>(i, ptNode->ptValue));
 
       for (size_t j = i + 1; j < size_t(end - begin); j++) {
         if (ptNode->next == NULL) {
@@ -107,43 +107,11 @@ class Trie {
         }
         ptNode = citer->second;
         if (NULL != ptNode->ptValue) {
-          res[i].dag.push_back(DagType::value_type(j, ptNode->ptValue));
+          res[i].nexts.push_back(pair<size_t, const DictUnit*>(j, ptNode->ptValue));
         }
       }
     }
   }
-  bool find(
-    Unicode::const_iterator begin,
-    Unicode::const_iterator end,
-    LocalVector<pair<size_t, const DictUnit*> > & res,
-    size_t offset = 0) const {
-    if (begin == end) {
-      return !res.empty();
-    }
-
-    const TrieNode* ptNode = _base + (*(begin++));
-    if (ptNode->ptValue != NULL && res.size() == 1) {
-      res[0].second = ptNode->ptValue;
-    } else if (ptNode->ptValue != NULL) {
-      res.push_back(DagType::value_type(offset, ptNode->ptValue));
-    }
-
-    TrieNode::NextMap::const_iterator citer;
-    for (Unicode::const_iterator itr = begin; itr != end; itr++) {
-      if (NULL == ptNode->next) {
-        break;
-      }
-      citer = ptNode->next->find(*itr);
-      if (citer == ptNode->next->end()) {
-        break;
-      }
-      ptNode = citer->second;
-      if (NULL != ptNode->ptValue) {
-        res.push_back(DagType::value_type(itr - begin + offset, ptNode->ptValue));
-      }
-    }
-    return !res.empty();
-  }
   void insertNode(const Unicode& key, const DictUnit* ptValue) {
     if (key.begin() == key.end()) {
       return;
diff --git a/test/unittest/TTrie.cpp b/test/unittest/TTrie.cpp
index 628a931..d40d8e6 100644
--- a/test/unittest/TTrie.cpp
+++ b/test/unittest/TTrie.cpp
@@ -15,7 +15,6 @@ TEST(DictTrieTest, NewAndDelete) {
 }
 
 TEST(DictTrieTest, Test1) {
-
   string s1, s2;
   DictTrie trie;
   trie.init(DICT_FILE);
@@ -32,22 +31,23 @@ TEST(DictTrieTest, Test1) {
 
   EXPECT_EQ("[\"26469\", \"21040\"] v -8.870", s2);
   word = "清华大学";
-  LocalVector<pair<size_t, const DictUnit*> > res, res2;
+  LocalVector<pair<size_t, const DictUnit*> > res;
   const char * words[] = {"清", "清华", "清华大学"};
   for(size_t i = 0; i < sizeof(words)/sizeof(words[0]); i++) {
     ASSERT_TRUE(TransCode::decode(words[i], uni));
     res.push_back(make_pair(uni.size() - 1, trie.find(uni.begin(), uni.end())));
     //resMap[uni.size() - 1] = trie.find(uni.begin(), uni.end());
   }
-  //DictUnit
-  //res.push_back(make_pair(0, ))
-
   vector<pair<size_t, const DictUnit*> > vec;
+  vector<struct Dag> dags;
   ASSERT_TRUE(TransCode::decode(word, uni));
-  ASSERT_TRUE(trie.find(uni.begin(), uni.end(), res2, 0));
+  trie.find(uni.begin(), uni.end(), dags);
+  ASSERT_EQ(dags.size(), uni.size());
+  ASSERT_NE(dags.size(), 0u);
   s1 << res;
-  s2 << res;
+  s2 << dags[0].nexts;
   ASSERT_EQ(s1, s2);
+  
 }
 
 TEST(DictTrieTest, UserDict) {
@@ -62,12 +62,48 @@ TEST(DictTrieTest, UserDict) {
   ASSERT_EQ("[\"20113\", \"35745\", \"31639\"]  -2.975", res);
 }
 
-TEST(DictTrieTest, automation) {
+TEST(DictTrieTest, Dag) {
   DictTrie trie(DICT_FILE, "../test/testdata/userdict.utf8");
-  //string word = "yasherhs";
-  string word = "abcderf";
-  Unicode unicode;
-  ASSERT_TRUE(TransCode::decode(word, unicode));
-  vector<struct Dag> res;
-  trie.find(unicode.begin(), unicode.end(), res);
+
+  {
+    string word = "清华大学";
+    Unicode unicode;
+    ASSERT_TRUE(TransCode::decode(word, unicode));
+    vector<struct Dag> res;
+    trie.find(unicode.begin(), unicode.end(), res);
+
+    size_t nexts_sizes[] = {3, 2, 2, 1};
+    ASSERT_EQ(res.size(), sizeof(nexts_sizes)/sizeof(nexts_sizes[0]));
+    for (size_t i = 0; i < res.size(); i++) {
+      ASSERT_EQ(res[i].nexts.size(), nexts_sizes[i]);
+    }
+  }
+
+  {
+    string word = "北京邮电大学";
+    Unicode unicode;
+    ASSERT_TRUE(TransCode::decode(word, unicode));
+    vector<struct Dag> res;
+    trie.find(unicode.begin(), unicode.end(), res);
+
+    size_t nexts_sizes[] = {3, 1, 2, 2, 2, 1};
+    ASSERT_EQ(res.size(), sizeof(nexts_sizes)/sizeof(nexts_sizes[0]));
+    for (size_t i = 0; i < res.size(); i++) {
+      ASSERT_EQ(res[i].nexts.size(), nexts_sizes[i]);
+    }
+  }
+
+  {
+    string word = "长江大桥";
+    Unicode unicode;
+    ASSERT_TRUE(TransCode::decode(word, unicode));
+    vector<struct Dag> res;
+    trie.find(unicode.begin(), unicode.end(), res);
+
+    size_t nexts_sizes[] = {3, 1, 2, 1};
+    ASSERT_EQ(res.size(), sizeof(nexts_sizes)/sizeof(nexts_sizes[0]));
+    for (size_t i = 0; i < res.size(); i++) {
+      ASSERT_EQ(res[i].nexts.size(), nexts_sizes[i]);
+    }
+  }
 }