Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
nhung dong » nhung cong, nhung dung, nhung bong
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
nhung don » nhung van, nhung bo
khoan cam » khoa cam, khoan va, phan cam
khan cap » khan ap, than cap, phan cac

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 cua ((nhung dong) or (nhung don)) ban ((khan cap) OR (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung cua ((nhung dong) OR (nhung don)) ban ((khan cap) OR (khoan cam))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh trung cua ((nhung dong) or (nhung don)) ban ((khan cap) OR (khoan cam))*".