Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cam » trung tam, trung nam, trung ca
trung cap » truong cao, trung tam
nho hieu » nha hieu, nho sieu, nhu hieu
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
khan cap » khan ap, than cap, khoan cam

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 - thanh ((trung cam) OR (trung cap)) nhung cong dan ((phan cau) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - thanh ((trung cam) OR (trung cap)) nhung cong dan ((phan cau) or (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - thanh ((trung cam) OR (trung cap)) nhung cong dan ((phan cau) or (khan cap))*.