Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, nhiet nang
trien cong » thien cong
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, hieu van
trung nha » trung nhan, trung nhat, trong nha
nha trien » nha triet, phat trien, nha truyen
thanh van » thanh san, thanh toan, thanh phan

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 nha trien cong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((nhieu tang) OR (hieu lang)) - thanh trung nha trien cong thanh van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((nhieu tang) or (hieu lang)) - thanh trung nha trien cong thanh van ban*.