diff --git a/app/controllers/site_search_controller.rb b/app/controllers/site_search_controller.rb
index 9ecb1f9..d730054 100644
--- a/app/controllers/site_search_controller.rb
+++ b/app/controllers/site_search_controller.rb
@@ -1,5 +1,5 @@
 class SiteSearchController < ApplicationController
-
+  include ActionView::Helpers::TextHelper
   def search
     startTime = Time.now
     if params[:keywords].present?
@@ -76,14 +76,7 @@ class SiteSearchController < ApplicationController
             next
         end
 
-        index = res[:content].index '<b>'
-        unless index.nil?
-            index = index>50 ? index-50 : 0
-            deadline = 150
-            res[:content] = res[:content][index, deadline]
-        else
-            res[:content] = res[:content][0, 100]
-        end
+        res[:content] = truncate(res[:content], length: 150)
     end
 
     result = result.sort_by { |k| k[:matches] }.reverse rescue []