/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: HuNguyn2 https://cdn.slidesharecdn.com/profile-photo-HuNguyn2-48x48.jpg?cb=1523070747 hj.tiểu sá»­ thì dài.nói hết sao được.hehe