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
nang cong » nang song, dang cong, bang cong
trinh va » trinh van, trinh vat, trinh ve
van tuan » van quan, anh tuan
va nang » van nang, da nang, cam nang

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