/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: TunValen https://cdn.slidesharecdn.com/profile-photo-TunValen-48x48.jpg?cb=1523263398 Nhìn phức tạp....hóa ra giản Ä‘Æ¡n.^^ ...I'm me <3