/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: huyentrangta18 https://cdn.slidesharecdn.com/profile-photo-huyentrangta18-48x48.jpg?cb=1523529312 chả có gì để giá»›i thiệu