Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
doi chieu » doc hieu, doi chi, ho chieu
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
vat hang » van hang, dat hang, va hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh trinh vat hang cong ((luan hoan) OR (luan van)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh trinh vat hang cong ((luan hoan) OR (luan van)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh trinh vat hang cong ((luan hoan) OR (luan van)) cau*.