Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
duong manh » duong van
doi chieu » doc hieu, doi chi, ho chieu
cua thong » cua thuong, cua khong, cua tong
hua khong » hoa khong, cua khong, hoac khong
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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 thong) or (hua khong)) duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh ((cua thong) OR (hua khong)) duong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh ((cua thong) or (hua khong)) duong manh toan ban*.