Perhaps you should try some spelling variations:
theo dieu » theo tieu, theo chieu, thuoc dieu
hanh dung » thanh dung, anh dung, hanh dong
nang cong » nang song, dang cong, bang cong
van thanh » ban thanh, van tuan
dung thi » dung tai, dung tri, dung chi
thi nang » thi cong, ki nang, thi hanh
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu hanh - hanh dung thi nang cong ((((dan toan) OR (van thanh))) OR (dan chan)) tap~.
• Adding a wildcard symbol may retrieve word variants: theo dieu hanh - hanh dung thi nang cong ((((dan toan) or (van thanh))) or (dan chan)) tap*.