Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh cua » doanh cua, manh cua
dong cong » duong cong, dung cong, dang cong
chi sach » chinh sach, co sach, moi sach
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
chat cau » chat cam, chat cao, chat va
chat bao » chat ban, thuat bao, nhat ban

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 ((chi sach) OR (chieu sach)) - canh tranh cua dong cong san ((chat cau) OR (chat bao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi sach) OR (chieu sach)) - canh tranh cua dong cong san ((chat cau) or (chat bao))~".
• Adding a wildcard symbol may retrieve word variants: doi ((chi sach) OR (chieu sach)) - canh tranh cua dong cong san ((chat cau) or (chat bao))*.