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 song dung trong marketing", "bo sach ky thuat ung dung trong marketing", "bo sach va thuc 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 ki thuat xung dung tvqg marketing" » "co sach ki thuat xung dung tri marketing", "co sach ki thuat dung dung tvqg marketing", "co sach ki thuat hung dung tvqg marketing", "co sach ki thuat song dung tvqg marketing", "co sach ki thuat cung dung tvqg marketing", "co sach ki thuat cuong dung tvqg marketing", "co sach ki thuat xung dung tong marketing", "co sach ky thuat xung dung tvqg marketing", "cuon sach ki thuat xung dung tvqg marketing", "hoc sach ki thuat xung dung tvqg marketing", "co sach kinh thuat xung dung tvqg marketing", "co sach bai thuat xung dung tvqg marketing", "co sach kem 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 va thuat ung dung trong marketing") or ("co sach ki thuat xung 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 ki thuat xung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( bo sach va thuat ung dung trong marketing ) or ( co sach ki thuat xung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach va thuat ung dung trong marketing") or ("co sach ki thuat xung dung tvqg marketing"))*.