diff --git a/app/Services/Logic/Search/Article.php b/app/Services/Logic/Search/Article.php
index fc49f0a5..57857c45 100644
--- a/app/Services/Logic/Search/Article.php
+++ b/app/Services/Logic/Search/Article.php
@@ -28,7 +28,7 @@ class Article extends Handler
         $paginator = new XunSearchPaginator([
             'xs' => $searcher->getXS(),
             'highlight' => $searcher->getHighlightFields(),
-            'query' => $params['query'],
+            'query' => $this->handleKeywords($params['query']),
             'page' => $page,
             'limit' => $limit,
         ]);
diff --git a/app/Services/Logic/Search/Course.php b/app/Services/Logic/Search/Course.php
index 1ee9e493..77b92702 100644
--- a/app/Services/Logic/Search/Course.php
+++ b/app/Services/Logic/Search/Course.php
@@ -28,7 +28,7 @@ class Course extends Handler
         $paginator = new XunSearchPaginator([
             'xs' => $searcher->getXS(),
             'highlight' => $searcher->getHighlightFields(),
-            'query' => $params['query'],
+            'query' => $this->handleKeywords($params['query']),
             'page' => $page,
             'limit' => $limit,
         ]);
diff --git a/app/Services/Logic/Search/Handler.php b/app/Services/Logic/Search/Handler.php
index 7a9853fb..6adcaaaa 100644
--- a/app/Services/Logic/Search/Handler.php
+++ b/app/Services/Logic/Search/Handler.php
@@ -18,4 +18,9 @@ abstract class Handler extends LogicService
 
     abstract function getRelatedQuery($query, $limit);
 
-}
\ No newline at end of file
+    protected function handleKeywords($str)
+    {
+        return kg_substr($str, 0, 50, '');
+    }
+
+}
diff --git a/app/Services/Logic/Search/Question.php b/app/Services/Logic/Search/Question.php
index 0f6db7d4..c035178f 100644
--- a/app/Services/Logic/Search/Question.php
+++ b/app/Services/Logic/Search/Question.php
@@ -28,7 +28,7 @@ class Question extends Handler
         $paginator = new XunSearchPaginator([
             'xs' => $searcher->getXS(),
             'highlight' => $searcher->getHighlightFields(),
-            'query' => $params['query'],
+            'query' => $this->handleKeywords($params['query']),
             'page' => $page,
             'limit' => $limit,
         ]);