Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
luan trong » quan trong, luat trong, luan tuong
bien tinh » bi tinh, yen tinh, diep tinh
mot bien » vat bien, so bien
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: mot bien tinh - ((hanh trang) or (anh tang)) luan trong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot bien tinh - ((hanh trang) OR (anh tang)) luan trong cong tan toan cao*.