Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung dong » nhung cong, nhung dung, nhung bong
trung cap » truong cao, trung tam
nhung don » nhung van, nhung bo
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung cap ((nhung dong) or (nhung don)) ban ((khan cap) OR (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cap ((nhung dong) OR (nhung don)) ban ((khan cap) OR (khan ap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung cap ((nhung dong) or (nhung don)) ban ((khan cap) OR (khan ap))*".