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
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh vat, trinh ve
van tuan » anh tuan
va hang » van hang, va nang, va lang

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 va hang cong ((((van tuan) or (van quan))) or (van ban)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh trinh va hang cong ((((van tuan) OR (van quan))) OR (van ban)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trinh va hang cong ((((van tuan) or (van quan))) or (van ban)) cau*.