Perhaps you should try some spelling variations:
truong dao » truong dai, truong cao, truong bo
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung dai » truong dai, trung tam, trung ha
trung cap » truong cao, trung tam
cong tac » cong ty
ho hieu » ho chieu, hoi hieu, nho hieu
tac van » tac vang, cac van, tac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh ((((trung dai) or (trung cap))) or (truong dao)) nhung cong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((((trung dai) OR (trung cap))) OR (truong dao)) nhung cong tac van ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((((trung dai) or (trung cap))) or (truong dao)) nhung cong tac van ban*.