Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cac » trinh cac, thanh cac, tranh cai
thanh bac » nhanh bac, thanh bai, thanh san
doi hieu » doi chieu, doc hieu, doi hien
cong dan » cong san, cong tan, huong dan
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - thanh tung va nhung cong dan ((tranh cac) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - thanh tung va nhung cong dan ((tranh cac) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - thanh tung va nhung cong dan ((tranh cac) or (thanh bac))*.