Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
thanh cac » thanh bac, thanh ca, tranh cac
tran van » luan van
cong dan » cong san, cong tan, huong dan
hanh cac » hang cac, hanh cat, nhanh cay
ho hieu » ho chieu, hoi hieu, nho hieu

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

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