/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ducnguyendns https://cdn.slidesharecdn.com/profile-photo-ducnguyendns-48x48.jpg?cb=1523361383 khó tính, cá»™c cằn, tá»± ká»· !