/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ngocbichnb https://cdn.slidesharecdn.com/profile-photo-ngocbichnb-48x48.jpg?cb=1523365427 BÆ°á»›ng, hay dá»—i :(