Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
trung cap » truong cao, trung tam
cong nang » cong ngang, cong nong, cong vang
cong lang » cong vang, cong luong, cong quang
cap dung » ap dung, cao dung, chan dung
hang cau » hang dau, hang ca, nhung cau

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

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