/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: dinhtienhai7 https://public.slidesharecdn.com/v2/images/profile-picture.png ♣ҜєᶇᶇƔ♠™ ngan gon suc tich chi can 1 tu