Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh tran » thanh trang, thanh toan, thanh tra
dung huong » dung thuong, dung phuong, dong huong
tran tuan » tran xuan, tran quang, tran thanh
tuan dung » tuan duong, tran dung, tan dung
chinh cau » chinh chau, chinh ca, chinh can
chan cau » phan cau, can cau, nhanh cau

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