quan tam

http://www.scoop.it/t/volunteer-by-nham-mat

gmail volunteeer

cousera

icevn

tnxm

http://www.manythings.org/slang/slang12.html

http://www.mediafire.com/view/?xihgia74735orw4

http://listverse.com/2013/02/03/10-psychology-tricks-you-can-use-to-influence-people/

http://blogs.wsj.com/searealtime/tag/vietnam/page/3/

https://class.coursera.org/commhealthworkers-001/wiki/view?page=GradingandLogistics

http://icevn.org/vi/node/454

http://www.forbes.com/sites/christopherhelman/2013/10/29/the-worlds-happiest-and-saddest-countries-2013/