Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
doi chinh » tai chinh, hoc chinh, doi chi
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
do chinh » hoc chinh, mo hinh, do dinh
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: ((doi chinh) OR (do 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: ((doi chinh) OR (do chinh)) sach - hanh ((trung cua) OR (trung tuan)) hang cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chinh) OR (do chinh)) sach - hanh ((trung cua) or (trung tuan)) hang cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chinh) OR (do chinh)) sach - hanh ((trung cua) or (trung tuan)) hang cong dan than cao*.