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
trong ban » trong san, trong tan, trong quan
cao dung » cao dong, cao ung, cap dung
ban pha » ban phap, ban nha, ban ha
pha cau » phan cau, phap cau, pha cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((nhieu tang) or (hieu lang)) - thanh trung ((cao dung) or (cao dang)) trong ban pha cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((nhieu tang) OR (hieu lang)) - thanh trung ((cao dung) OR (cao dang)) trong ban pha cau.
• Adding a wildcard symbol may retrieve word variants: doc ((nhieu tang) or (hieu lang)) - thanh trung ((cao dung) or (cao dang)) trong ban pha cau*.