Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung cap » truong cao, trung tam
ho chieu » theo chieu, hoc thieu, doi chieu
cap tong » cap nong, cap hoang, gap trong
cong tan » cong tac, cong san, cong thanh
can cau » van cau, ban cau, ca cau

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 cap tong ((cong dong) or (cong tan)) can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung cap tong ((cong dong) OR (cong tan)) can cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung cap tong ((cong dong) or (cong tan)) can cau*.