/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: linhgiangphung https://cdn.slidesharecdn.com/profile-photo-linhgiangphung-48x48.jpg?cb=1523578312 ChÆ¡i Ä‘i thì biết :))