Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
van dung » tin dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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 tranh ((((van dung) OR (van dong))) OR (xay dung)) cong dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tranh ((((van dung) OR (van dong))) or (xay dung)) cong dan than ban~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tranh ((((van dung) OR (van dong))) or (xay dung)) cong dan than ban*.