Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (ho chieu)) sach - thanh trung cua nhung ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (ho chieu)) sach - thanh trung cua nhung ((cong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (ho chieu)) sach - thanh trung cua nhung ((cong dan) or (cong san)) toan cao*.