Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sach » chinh sach, chieu sang, chieu xanh
dung duong » dung dong, dung dung, dung luong
dong duong » tuong duong, cuong duong, dong thong
tuong cua » truong cua, huong cua, thong cua
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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)) - thanh tuong cua ((dung duong) OR (dong duong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chiet tach)) - thanh tuong cua ((dung duong) OR (dong duong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chiet tach)) - thanh tuong cua ((dung duong) OR (dong duong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chiet tach)) - thanh tuong cua ((dung duong) OR (dong duong)) manh toan ban*.