Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
hanh trang » thanh trung, canh tranh, hanh trinh
theo bien » thieu bien, theo tieu, che bien
bien tinh » bi tinh, yen tinh, diep tinh
trang va » tran van, hang va
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: theo bien tinh - hanh trang va thuong ((cong tan) or (truong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo bien tinh - hanh trang va thuong ((cong tan) OR (truong thanh)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo bien tinh - hanh trang va thuong ((cong tan) or (truong thanh)) toan cao*.