Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chua nang » chuc nang, chua xang, kha nang
cua chong » cua cong, cua chung, cua khong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong thanh
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: theo ((chua nang) or (chieu sach)) - anh tang cua chong ((cong tan) or (huong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua nang) OR (chieu sach)) - anh tang cua chong ((cong tan) OR (huong dan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chua nang) or (chieu sach)) - anh tang cua chong ((cong tan) or (huong dan)) toan ban*.