Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
cang thang » cong thanh, dang thanh
dong cang » dong bang, dong cong, dong cung
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ha » trinh han, trinh hoa, trinh nha
van chat » cao chat
ha dong » hoat dong, van dong
ban can » ban dan, ban hang, ban hanh

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 - canh trinh ha dong cang thang ((ban can) or (van chat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh trinh ha dong cang thang ((ban can) OR (van chat)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh trinh ha dong cang thang ((ban can) or (van chat))*.