Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
toan ban » van ban
toan cao » toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhieu tang) OR (hieu lang)) - manh tran tuan dang cong dan ((toan ban) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((nhieu tang) OR (hieu lang)) - manh tran tuan dang cong dan ((toan ban) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: ho ((nhieu tang) OR (hieu lang)) - manh tran tuan dang cong dan ((toan ban) or (toan cao))*.