/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: tcphong https://public.slidesharecdn.com/v2/images/profile-picture.png ÐìÖ¾äh vui v?,h¨°a ??ng,...n¨®i chung wen r¨´i b¨ªt ^ ^