/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: meomuop92754 https://public.slidesharecdn.com/v2/images/profile-picture.png tu tin vao ban than luon song het minh -ham hoc hoi co trach mhiem voi viec minh lam - khong so kho -