Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trinh va » trinh van, trinh vat, trinh ve
trinh he » trinh han, trinh hoa, trinh thi
trong ca » trong cac, trong nha
phan dau » phan tu, hang dau
ca phan » cac phan, cao phan, cap phan

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 - canh ((trinh va) or (trinh he)) dung trong ca phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh ((trinh va) OR (trinh he)) dung trong ca phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh ((trinh va) or (trinh he)) dung trong ca phan dau*.