/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: limatchodat299 https://public.slidesharecdn.com/v2/images/profile-picture.png - vui vẻ Ä‘Æ¡n giản là nhÆ° v. - - .......okey....... -