Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thanh dung » thanh duong, thanh hung, hanh dung
thanh tung » thanh cong
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hoc thien » hoc hien, hoc thieu, hoc thiet
cong san » cong tac
than cao » toan cao, thai cao, than cap
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - ((thanh dung) or (thanh tung)) luan chung cong san ((than cao) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - ((thanh dung) OR (thanh tung)) luan chung cong san ((than cao) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - ((thanh dung) or (thanh tung)) luan chung cong san ((than cao) or (khan cap))*.