Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
chong cong » cong cong, thong cong, cuong cong
hien hanh » dieu hanh
trung cap » truong cao, trung tam
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong san, cong tan, huong dan

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