Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
cua phuong » cuu phuong, cuc phuong, luan phuong
bien tinh » bi tinh, yen tinh, ban tinh
cua khong » hua khong, cua thuong, cua cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: hoc ((bien tinh) or (diep tinh)) - thanh truong ((cua khong) OR (cua phuong)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((bien tinh) OR (diep tinh)) - thanh truong ((cua khong) OR (cua phuong)) cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((bien tinh) or (diep tinh)) - thanh truong ((cua khong) OR (cua phuong)) cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((bien tinh) or (diep tinh)) - thanh truong ((cua khong) OR (cua phuong)) cong tac toan cau*.