Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
cua khong » hua khong, cua phuong, cua thuong
cua tong » cua cong, cua dong, cua nong
cong san » cong tac
san toan » van toan, dan toan, manh 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 hien nhanh - hanh trang ((cua khong) or (cua tong)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh trang ((cua khong) OR (cua tong)) cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh trang ((cua khong) or (cua tong)) cong san toan cau*.