/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: onggiayamaha1 https://cdn.slidesharecdn.com/profile-photo-onggiayamaha1-48x48.jpg?cb=1523568573 thì cÅ©ng nhÆ° ai đó thôi