Perhaps you should try some spelling variations:
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
van hoang » van hoan, quan hoang, tran hoang
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
can bang » cao bang, can ban, van ban
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, khoan cam

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 tung ((van hoang) or (can bang)) ((cong dan) or (cong thanh)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh tung ((van hoang) OR (can bang)) ((cong dan) OR (cong thanh)) khan cap.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh tung ((van hoang) or (can bang)) ((cong dan) or (cong thanh)) khan cap*.