Perhaps you should try some spelling variations:
truong dao » truong dai, truong cao, truong bo
nhung cong » dung cong, thong cong, hang cong
sieu lang » hieu lang, sieu nang, sieu van
trung dai » truong dai, trung tam, trung cap
nho sieu » nho hieu, nghe sieu, hoc sieu
cong san » cong tac
san van » tan van, luan van, tran van

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

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