/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: pnkha2012 https://cdn.slidesharecdn.com/profile-photo-pnkha2012-48x48.jpg?cb=1523514452 Phạm Nguyá»…n Khánh Hà ............................ .v.v.