diff --git a/app/controllers/stores_controller.rb b/app/controllers/stores_controller.rb
index f1d7e9999..b42b3a942 100644
--- a/app/controllers/stores_controller.rb
+++ b/app/controllers/stores_controller.rb
@@ -10,13 +10,21 @@ class StoresController < ApplicationController
 
   def search
     name = params[:name] ||= ''
-    redirect_to stores_path, :notice => '为何不写点东西?' if name.blank?
+    redirect_to stores_path, :notice => l(:field_course_un) if name.blank?
     # 按文件名搜索
     #result = Attachment.includes(:project).where("projects.is_public = 1 AND filename LIKE '%" << name << "%' ")
     result = Attachment.where("attachments.container_type IS NOT NULL AND filename LIKE '%" + name + "%' ").
               reorder("created_on DESC")
     result = result.to_a
-    result.map { |res| result.delete(res) if res.container.nil?}
+    result.map { |res|
+      if(res.container.nil? || 
+        (res.container.class.to_s.eql?("Project") && res.container.is_public == false) ||
+        (res.container.class.to_s.eql?("HomeworkAttach") && res.container.bid.reward_type == 3) ||
+        false
+        )
+        result.delete(res)
+      end
+    }
     @searched_attach = paginateHelper result
   end
 
@@ -32,10 +40,10 @@ class StoresController < ApplicationController
      					reorder("#{Attachment.table_name}.downloads DESC").
      					limit(LIMIT)
     @homeworks_attach = Attachment.where("container_type = 'HomeworkAttach'").
-    					reorder("created_on DESC").
+    					reorder("downloads DESC").
     					limit(LIMIT)
     @memos_attach = Attachment.where("container_type = 'Memo'").
-    					reorder("created_on DESC").
+    					reorder("downloads DESC").
     					limit(LIMIT)
     @attach_array = Array.new
     @attach_array.push(@projects_attach, @courses_attach, @homeworks_attach, @memos_attach)