Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc trieu » hoc thieu, hoc tieu, hoc dieu
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
phap toan » phap hoan, phap luan, phap phan
van cong » van dong, van phong, phan cong
tam toan » tap toan, tam than, pham toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trieu tinh - hanh tranh cua ((van cong) or (bang cong)) ((tam toan) or (phap toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trieu tinh - hanh tranh cua ((van cong) OR (bang cong)) ((tam toan) OR (phap toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - hanh tranh cua ((van cong) or (bang cong)) ((tam toan) or (phap toan)) cao*.