/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: trantuananh2202 https://public.slidesharecdn.com/v2/images/profile-picture.png yahoo: changkhothuychung_love22@yahoo.com hoặc : trantuananh0983117479@yahoo.com phone: 0983.11.74.7*