Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung vap » trung cap, trung van, trung lap
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
cong tac » cong ty
chan cau » phan cau, can cau, chinh cau
ban cau » bang cau, ban can, van cau

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 va)) hang cong tac ((chan cau) or (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung vap) OR (trung va)) hang cong tac ((chan cau) OR (ban cau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung vap) or (trung va)) hang cong tac ((chan cau) or (ban cau))*.