/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: lawnyltut https://cdn.slidesharecdn.com/profile-photo-lawnyltut-48x48.jpg?cb=1523511902 Lúc ồn ào, lúc im lặng...:)