Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
manh tung » manh hung
van thang » van khang, van hang, van than
van thanh » ban thanh, van tuan
nho hieu » nha hieu, nho sieu, nhu hieu
ban cong » bang cong, van cong, phan cong

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: nho hieu lang - ((manh tung) OR (thanh tung)) cua ban cong ((van thang) OR (van thanh)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - ((manh tung) OR (thanh tung)) cua ban cong ((van thang) or (van thanh)) cau~".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - ((manh tung) OR (thanh tung)) cua ban cong ((van thang) or (van thanh)) cau*.