Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
lang cong » dang cong, bang cong, hang cong
trinh do » trinh ky
dan toan » van toan, dan than, manh toan
do lang » o lang, do dang, do tang

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 - hanh trinh do lang cong ((dan toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh trinh do lang cong ((dan toan) OR (tinh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trinh do lang cong ((dan toan) or (tinh toan)) cau*.