Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, doi chi, ho chieu
trung ha » trung hoc, trung tam, trung cap
ha nhung » hoa nhung, hay nhung, pha nhung
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: ((theo chieu) or (doi chieu)) sach - thanh trung ha nhung ((cong dan) OR (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) sach - thanh trung ha nhung ((cong dan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chieu)) sach - thanh trung ha nhung ((cong dan) OR (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) sach - thanh trung ha nhung ((cong dan) OR (cong san)) toan cao*.