Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh
hanh cac » hang cac, hanh cat, nhanh cay

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 - manh ((trang va) or (truong dai)) nhung cong dan hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - manh ((trang va) OR (truong dai)) nhung cong dan hanh cac*.