Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, nhiet nang
bang luong » nang luong, hang luong, bang suong
hieu lang » chieu sang, hieu quang, hieu van
trung cua » truong cua, trung tuan, trung cap
cua bang » chua bang, cua ban, cua dang
luong va » dung va
toan cao » toan tap
toan ban » van ban

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) or (nhieu tang)) - thanh trung cua bang luong va ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho ((hieu lang) OR (nhieu tang)) - thanh trung cua bang luong va ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho ((hieu lang) or (nhieu tang)) - thanh trung cua bang luong va ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: nho ((hieu lang) or (nhieu tang)) - thanh trung cua bang luong va ((toan cao) OR (toan ban))*.