Perhaps you should try some spelling variations:
"bo sach dao thuc ung dung trong marketing" » "bo sach dao thuc ung dung tri marketing", "bo lanh dao thuc ung dung trong marketing", "bo sach dan thuc ung dung trong marketing", "bo sach dao tuc ung dung trong marketing", "bo sach do thuc ung dung trong marketing", "bo sach dao thuc dung dung trong marketing", "bo sach dao thuc cung dung trong marketing", "bo sach dao thuc uong dung trong marketing", "hoc sach dao thuc ung dung trong marketing"
"co sach va thuat xung dung tvqg marketing" » "co sach va thuat xung dung tri marketing", "co sach va thuat dung dung tvqg marketing", "co sach va thuat hung dung tvqg marketing", "co sach va thuat ung dung tvqg marketing", "co sach va thuat cung dung tvqg marketing", "co sach va thuat cuong dung tvqg marketing", "co sach va thuat xung dung tong marketing", "co sach ky thuat xung dung tvqg marketing", "co sach ki thuat xung dung tvqg marketing", "co sach va thuc xung dung tvqg marketing", "cuon sach va thuat xung dung tvqg marketing", "hoc sach va thuat xung dung tvqg marketing", "co sach xa thuat xung dung tvqg marketing", "co sach ha thuat xung dung tvqg marketing", "co sach nha thuat xung 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 dao thuc ung dung trong marketing") or ("co sach va thuat xung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach dao thuc ung dung trong marketing") OR ("co sach va thuat xung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( bo sach dao thuc ung dung trong marketing ) or ( co sach va thuat xung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach dao thuc ung dung trong marketing") or ("co sach va thuat xung dung tvqg marketing"))*.