Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, cong tan
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
vat hang » van hang, dat hang, va hang
ban cau » bang cau, ban can, ban dau
van cau » van dau, van hau, van chat

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