Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
toc hieu » toc thieu, doc hieu, hoc thieu
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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

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