/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: oscarletung https://public.slidesharecdn.com/v2/images/profile-picture.png Sôi Ná»—i . Lạc Quan..nhÆ°ng đôi khi lạnh lùng và trầm tính.....Khó HÄ©u...(_ __!!)