Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 - hanh ((trung cua) or (trung tuan)) hang cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hanh ((trung cua) OR (trung tuan)) hang cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - hanh ((trung cua) or (trung tuan)) hang cong dan than cao*.