�ݺ�ߣshows by User: danghungkiet

�ݺ�ߣshows by User: danghungkiet / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: danghungkiet / �ݺ�ߣShare feed for �ݺ�ߣshows by User: danghungkiet https://cdn.slidesharecdn.com/profile-photo-danghungkiet-48x48.jpg?cb=1523627694 Đối với tôi im lặng sẽ dễ làm việc hơn...,vì ko ai biết nên có thất bại thì ko ai wan tâm...,âm thầm lặng lẽ đó là tôi...