ºÝºÝߣshows by User: nguyenhien9216778 / http://www.slideshare.net/images/logo.gif ºÝºÝߣshows by User: nguyenhien9216778 / ºÝºÝߣShare feed for ºÝºÝߣshows by User: nguyenhien9216778 https://public.slidesharecdn.com/v2/images/profile-picture.png ³¢²¹Ì£²Ô³ó.......