Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
toan thanh » tran thanh, hoan thanh, toan thang
thanh dang » thanh hang, thanh dan, thanh dong
manh toan » thanh toan, anh tuan, tinh toan
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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: doi ((chieu sach) OR (chiet tach)) - manh toan thanh dang cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - manh toan thanh dang cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chiet tach)) - manh toan thanh dang cong dan than cau*.