Perhaps you should try some spelling variations:
truong cao » truong dai
hieu lang » chieu sang, hieu quang, nhieu tang
trung cam » trung tam, trung cap, trung nam
hang cong » dang cong, hang nong, bang cong
doi hieu » doi chieu, doc hieu, doi hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - thanh ((trung cam) or (truong cao)) hang cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - thanh ((trung cam) OR (truong cao)) hang cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - thanh ((trung cam) or (truong cao)) hang cong dan than cap*.