Perhaps you should try some spelling variations:
truong dao » truong dai, truong cao
hieu lang » chieu sang, hieu quang, nhieu tang
truong bo » truong cao
hoi hieu » hoi phieu, hoi tieu, moi hieu
nong tac » cong tac, dong tac, tuong tac
nong tan » cong tan, nong dan, nong san
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - thanh ((truong dao) or (truong bo)) hang ((nong tac) or (nong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - thanh ((truong dao) OR (truong bo)) hang ((nong tac) OR (nong tan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - thanh ((truong dao) or (truong bo)) hang ((nong tac) or (nong tan)) toan tap*.