Perhaps you should try some spelling variations:
tranh khoa » trinh khoa, tran khoa, doanh khoa
bien tinh » bi tinh, yen tinh, diep tinh
khoa than » khoa luan, hoa thai, hoa tan
than cong » thanh cong, thuan cong, phan cong
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
mot bien » vat bien, so bien
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 - canh tranh khoa than cong danh toan cao~.
• Adding a wildcard symbol may retrieve word variants: mot bien tinh - canh tranh khoa than cong danh toan cao*.