Perhaps you should try some spelling variations:
chua nang » chuc nang, chua xang, kha nang
hanh dung » thanh dung, anh dung, hanh dong
luan nang » luan van, van nang, luan san
nang nong » nang song, hang nong, nang dong
vang toan » van toan, quang toan, vang trang
dang toan » dang tran, dan toan, dung toan
chu van » cuu van, chu han

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 ((chu van) OR (chua nang)) - hanh dung luan nang nong ((vang toan) OR (dang toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((chu van) or (chua nang)) - hanh dung luan nang nong ((vang toan) or (dang toan)) cau*.