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
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong bai » cuong bai, cong hai, cong ba
cung bai » cuong bai, dung bai, nhung bai
tap cao » tap co, tao cao, tay cao
tap cac » tai cac, tap trac

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 - hanh tranh cua thong ((cong bai) or (cung bai)) ((tap cao) OR (tap cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tranh cua thong ((cong bai) OR (cung bai)) ((tap cao) OR (tap cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tranh cua thong ((cong bai) or (cung bai)) ((tap cao) OR (tap cac))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tranh cua thong ((cong bai) or (cung bai)) ((tap cao) OR (tap cac))*.