Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
tich toan » tinh toan, tich than, trinh toan
tac toan » tap toan, hach toan, tac thanh
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 hien nhanh - thanh trung cua trong cong ((((tac toan) OR (tich toan))) or (tam toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - thanh trung cua trong cong ((((tac toan) OR (tich toan))) OR (tam toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - thanh trung cua trong cong ((((tac toan) OR (tich toan))) or (tam toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - thanh trung cua trong cong ((((tac toan) OR (tich toan))) or (tam toan)) cau*.