Perhaps you should try some spelling variations:
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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 ((tran tuan) or (trung tam)) dung cong dan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh ((tran tuan) OR (trung tam)) dung cong dan ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh ((tran tuan) or (trung tam)) dung cong dan ((than cau) or (phan cau))*.