/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: hongngoc9847867 https://public.slidesharecdn.com/v2/images/profile-picture.png Ai tốt vá»›i tôi thì tôi tốt lại thế thôi!