Perhaps you should try some spelling variations:
trung tuan » trung thanh, tran tuan, truong thanh
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - thanh ((trung tuan) or (trung tam)) nhung cong ban than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - thanh ((trung tuan) OR (trung tam)) nhung cong ban than cap.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - thanh ((trung tuan) or (trung tam)) nhung cong ban than cap*.