Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
dung cua » dung luan, dung cho
dan canh » van canh, dan cach, dan hanh
dan can » dan chan, dan ca, ban can

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 - thanh ((dung cua) or (trung cua)) nhung cong ((dan can) or (dan canh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((dung cua) OR (trung cua)) nhung cong ((dan can) OR (dan canh)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((dung cua) or (trung cua)) nhung cong ((dan can) or (dan canh)) cau*.