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
cua dong » chua dong, cua cong, cua dang
huy dong » ha dong
cong tac » cong ty
tac van » tac vang, cac van, tac va

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