Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cua trong » cua truong, cua trung, qua trong
ho chieu » theo chieu, hoc thieu, doi chieu
tung cua » trung cua, tuong cua, dung cua
tan toan » tap toan, van toan, dan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh tung cua trong cong ((((tan toan) or (dan than))) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung cua trong cong ((((tan toan) OR (dan than))) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung cua trong cong ((((tan toan) or (dan than))) or (tan tran)) cau*.