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
cua trong » cua truong, cua trung, qua trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
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: ho chieu sach - thanh trung cua trong cong san ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung cua trong cong san ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung cua trong cong san ((toan tap) or (toan ban))*.