Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
cong danh » cuong danh, cong thanh, cong khanh
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
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: ho chieu sach - thanh trung cua cong ((cong danh) or (cong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung cua cong ((cong danh) OR (cong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung cua cong ((cong danh) or (cong dan)) toan cao*.