Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cuong cong » cong cong, luong cong, duong cong
cong sang » cong san, cong lang, cong vang
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung va) OR (trung ha)) cuong cong sang ((thanh lap) OR (thanh hai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung va) or (trung ha)) cuong cong sang ((thanh lap) OR (thanh hai))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung va) or (trung ha)) cuong cong sang ((thanh lap) OR (thanh hai))*.