/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: quangdaido https://cdn.slidesharecdn.com/profile-photo-quangdaido-48x48.jpg?cb=1578552495 t là ông ná»™i thăng @Giang Nguyen