/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: DucvinhNguyen https://cdn.slidesharecdn.com/profile-photo-DucvinhNguyen-48x48.jpg?cb=1523234812 Hình nhÆ° là không có gì :v :v