Perhaps you should try some spelling variations:
"bo sach va thuat ung dung trong marketing" » "bo sach va thuat ung dung tri marketing", "bo sach va thuat dung dung trong marketing", "bo sach va thuat hung dung trong marketing", "bo sach va thuat xung dung trong marketing", "bo sach ky thuat ung dung trong marketing", "bo sach ki thuat ung dung trong marketing", "bo sach va thiet ung dung trong marketing", "hoc sach va thuat ung dung trong marketing", "bo sach xa thuat ung dung trong marketing", "bo sach ha thuat ung dung trong marketing", "bo sach dao thuat ung dung trong marketing"
"co sach va thuc ung dung tvqg marketing" » "co sach va thuc ung dung tri marketing", "co sach va thuc ung dung tong marketing", "co sach va thuc dung dung tvqg marketing", "co sach va thuc cung dung tvqg marketing", "co sach va thuc uong dung tvqg marketing", "co sach xa thuc ung dung tvqg marketing", "co sach ha thuc ung dung tvqg marketing", "co sach dao thuc ung dung tvqg marketing", "cuon sach va thuc ung dung tvqg marketing", "hoc sach va thuc ung dung tvqg marketing"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("bo sach va thuat ung dung trong marketing") or ("co sach va thuc ung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach va thuat ung dung trong marketing") OR ("co sach va thuc ung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( bo sach va thuat ung dung trong marketing ) or ( co sach va thuc ung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach va thuat ung dung trong marketing") or ("co sach va thuc ung dung tvqg marketing"))*.