Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cap bang » cao bang, can bang, lap bang
cong dan » cong san, cong tan, huong dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam
can ban » van ban, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - thanh trung ((cap bang) or (can ban)) cong dan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh trung ((cap bang) OR (can ban)) cong dan khan cap.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh trung ((cap bang) or (can ban)) cong dan khan cap*.