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
thanh lap » thanh san, phan lap, thanh hai
trung ha » trung hoc, trung tam, trung cap
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
ha dung » hai dung, kha dung, nha dung

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 ha dung ((cong dan) OR (cong san)) thanh lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh trung ha dung ((cong dan) OR (cong san)) thanh lap".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung ha dung ((cong dan) OR (cong san)) thanh lap*.