Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
hieu quang » thieu quang, hieu quan, hieu qua
thang luan » tang luan, hang luan, thong luan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
thanh cac » hanh cac, thanh ca, tranh cac
thanh bac » nhanh bac, thanh bai, thanh san
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu quang - thanh thang luan chung cong tan ((thanh cac) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu quang - thanh thang luan chung cong tan ((thanh cac) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: doc hieu quang - thanh thang luan chung cong tan ((thanh cac) or (thanh bac))*.