Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu sach » chiet tach, chieu sang, chieu xanh
trong quan » thong quan, tong quan, thong quang
tran tuan » tran xuan, tran quang, tran thanh
quan than » quan thanh, qua than, quang thanh
than cau » toan cau, phan cau, than cap

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 sach) OR (chinh sach)) - thanh ((tran tuan) or (trung thanh)) dung trong quan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - thanh ((tran tuan) OR (trung thanh)) dung trong quan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chinh sach)) - thanh ((tran tuan) or (trung thanh)) dung trong quan than cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chinh sach)) - thanh ((tran tuan) or (trung thanh)) dung trong quan than cau*.