Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
quan trien » quang thien, quan tri, quan dien
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
quan tren » quan trong, quang tran, quan tri
cua dung » cua dang, cua dong, qua dung

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 tranh cua dung trong ((quan trien) or (quan tren)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh cua dung trong ((quan trien) OR (quan tren)) van.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh cua dung trong ((quan trien) or (quan tren)) van*.