Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » trinh luat, trinh quan, trinh luan
hang cong » dang cong, hang nong, bang cong
ban thanh » ban hanh
tinh cua » sinh cua, tinh chat, tranh cua
ban hang » ngan hang

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: doi chieu sach - hanh ((trinh cua) OR (tinh cua)) hang cong ((ban thanh) OR (ban hang)) cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh cua) or (tinh cua)) hang cong ((ban thanh) or (ban hang)) cau*.