Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh
nhieu tang » nhiet nang
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, hieu van, biet lang
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban 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: ho ((((chieu sang) OR (nhieu tang))) or (hieu lang)) - thanh trung va nhung cong tan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sang) OR (nhieu tang))) OR (hieu lang)) - thanh trung va nhung cong tan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((chieu sang) OR (nhieu tang))) or (hieu lang)) - thanh trung va nhung cong tan than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu sang) OR (nhieu tang))) or (hieu lang)) - thanh trung va nhung cong tan than cap*.