Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
cua khong » hua khong, cua phuong, cua thuong
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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: hoc hien nhanh - thanh trung ((cua khong) or (cua tong)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - thanh trung ((cua khong) OR (cua tong)) cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - thanh trung ((cua khong) or (cua tong)) cong tac toan cao*.