Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
cong thanh » dong thanh, cong trinh, cong tan
thanh dung » thanh duong, thanh tung, thanh hung
tang thanh » dang thanh, trung thanh, hoang thanh
hieu lang » chieu sang, hieu quang, hieu van
dung cong » dung trong
tan thanh » tran thanh, toan thanh, ban thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((nhieu tang) or (hieu lang)) - thanh cong thanh dung cong ((tan thanh) OR (tang thanh)) cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhieu tang) OR (hieu lang)) - thanh cong thanh dung cong ((tan thanh) OR (tang thanh)) cham.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((nhieu tang) or (hieu lang)) - thanh cong thanh dung cong ((tan thanh) OR (tang thanh)) cham".
• Adding a wildcard symbol may retrieve word variants: ho ((nhieu tang) or (hieu lang)) - thanh cong thanh dung cong ((tan thanh) OR (tang thanh)) cham*.