Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung vap » trung cap, trung va, trung lap
trung van » truong van, trong van, trung va
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, 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: ho chieu sach - thanh ((trung vap) or (trung van)) hang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung vap) OR (trung van)) hang cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung vap) or (trung van)) hang cong dan than cau*.