Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
danh trung » dang trung, dinh trung, manh trung
thanh dung » thanh duong, thanh tung, thanh hung
doi chieu » doc hieu, doi chi, ho chieu
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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 - ((danh trung) or (canh tranh)) thanh dung trong ((tan toan) OR (tap toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((danh trung) OR (canh tranh)) thanh dung trong ((tan toan) OR (tap toan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((danh trung) or (canh tranh)) thanh dung trong ((tan toan) OR (tap toan)) ban*".