Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung nam » trung tam, trong nam, trung cap
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, doi chieu
nam dang » nam dan, nam danh, nam dong
cong san » cong tac
song van » hoang van, trong van, duong van

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 nam dang ((cong san) or (song van)) thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung nam dang ((cong san) OR (song van)) thanh cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung nam dang ((cong san) or (song van)) thanh cau*.