Perhaps you should try some spelling variations:
thanh trung » thanh tung
tien thanh » tien thinh, tran thanh, den thanh
hien hanh » dieu hanh
trung cap » truong cao, trung tam
hang cong » dang cong, hang nong, bang cong
dan tai » van tai, dan thi, han tai
tai cao » thai cao, tao cao, tai sao

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 hanh) or (tien thanh)) - thanh trung cap ((hang cong) or (dung trong)) dan tai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (tien thanh)) - thanh trung cap ((hang cong) OR (dung trong)) dan tai cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (tien thanh)) - thanh trung cap ((hang cong) or (dung trong)) dan tai cao*.