Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
toan thanh » tran thanh, hoan thanh, toan thang
thanh bang » thanh hang, thanh ban, thanh hoang
manh toan » thanh toan, anh tuan, tinh toan
bang cong » dang cong, bang song, hang cong
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - manh toan thanh bang cong dan ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) OR (chiet tach)) - manh toan thanh bang cong dan ((than cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) OR (chiet tach)) - manh toan thanh bang cong dan ((than cau) or (than cap))*.