Perhaps you should try some spelling variations:
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
chua xang » chua nang, chuc nang, chu bang
hanh dung » thanh dung, anh dung, hanh dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((thuc hanh) or (chua xang)) - hanh dung luan chung cong tan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((thuc hanh) OR (chua xang)) - hanh dung luan chung cong tan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo ((thuc hanh) or (chua xang)) - hanh dung luan chung cong tan ((toan cao) or (toan tap))*.