Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
hien nhanh » hien hanh, thien thanh, dien thanh
tien thanh » tien thinh, tran thanh, den thanh
dao khung » dai khung, dao khang, dao khong
dam khung » dai khung, cam hung, cam nhung
tac thanh » bac thanh, cac thanh, tcc thanh
thanh lap » thanh san, phan lap, thanh hai
long tac » cong tac, dong tac, luong tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (tien thanh)) - thanh truong ((dao khung) OR (dam khung)) long tac thanh lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) or (tien thanh)) - thanh truong ((dao khung) OR (dam khung)) long tac thanh lap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (tien thanh)) - thanh truong ((dao khung) OR (dam khung)) long tac thanh lap*.