Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
doi chinh » do chinh, tai chinh, hoc chinh
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
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: doi chinh sach - hanh ((trung cua) or (trung tuan)) hang cong van than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chinh sach - hanh ((trung cua) OR (trung tuan)) hang cong van than cao.
• Adding a wildcard symbol may retrieve word variants: doi chinh sach - hanh ((trung cua) or (trung tuan)) hang cong van than cao*.