Perhaps you should try some spelling variations:
truong trung » tieng trung
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
nho hieu » nha hieu, nho sieu, nhu hieu
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho hieu lang - hanh trinh luat ((nhung cong) or (truong trung)) dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho hieu lang - hanh trinh luat ((nhung cong) OR (truong trung)) dan than cap.
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh trinh luat ((nhung cong) or (truong trung)) dan than cap*.