Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh trang » thanh trung, hanh trinh, minh trang
dang cong » dung cong
cua dang » cua cong, cua ban
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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) OR (chiet tach)) - ((hanh trang) or (canh tranh)) cua dang cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chiet tach)) - ((hanh trang) OR (canh tranh)) cua dang cong san toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - ((hanh trang) or (canh tranh)) cua dang cong san toan cao*".