Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trung cao » truong cao, trung cap, trung co
cao chong » cao cong, cao chung, cao cuong
cong tap » cuong tap, cong tac, tong tap
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: doi chieu sach - thanh trung cao chong ((cong tap) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung cao chong ((cong tap) OR (cong tan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung cao chong ((cong tap) or (cong tan)) toan ban*.