Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
thanh tinh » thanh binh, nhanh tinh, than kinh
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban

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 tinh ((cua dung) or (qua dung)) cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - thanh tinh ((cua dung) OR (qua dung)) cong san toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chinh sach)) - thanh tinh ((cua dung) or (qua dung)) cong san toan tap*".