/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: tiendongsi https://public.slidesharecdn.com/v2/images/profile-picture.png LaÌ€ ngÆ°Æ¡Ì€i vui vẻ, dễ hoÌ€a đồng :D