Perhaps you should try some spelling variations:
"bo sach ki thuat ung dung tai marketing" » "bo sach ki thuat ung dung tri marketing", "bo sach ki thuat ung dung tac marketing", "bo sach ki thuat ung dung thi marketing", "bo sach ki thuat dung dung tai marketing", "bo sach ki thuat hung dung tai marketing", "bo sach ki thuat xung dung tai marketing", "bo sach ky thuat ung dung tai marketing", "co sach ki thuat ung dung tai marketing", "hoc sach ki thuat ung dung tai marketing", "bo sach kinh thuat ung dung tai marketing", "bo sach bai thuat ung dung tai marketing", "bo sach kem thuat ung dung tai marketing"
"bo sach va thiet ung dung dat marketing" » "bo sach va thiet ung dung tac marketing", "bo sach va thiet ung dung van marketing", "bo sach va thiet ung dung thuat marketing", "bo sach va thuyet ung dung dat marketing", "bo sach va thich ung dung dat marketing", "bo sach va trien ung dung dat marketing", "bo sach va thiet ung dung va marketing", "co sach va thiet ung dung dat marketing", "hoc sach va thiet ung dung dat marketing", "bo sach xa thiet ung dung dat marketing", "bo sach ha thiet ung dung dat marketing", "bo sach dao thiet ung dung dat marketing"

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 thiet ung dung dat marketing") or ("bo sach ki thuat ung dung tai marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach va thiet ung dung dat marketing") OR ("bo sach ki thuat ung dung tai marketing")).
• Removing quotes may allow a broader search: (( bo sach va thiet ung dung dat marketing ) or ( bo sach ki thuat ung dung tai marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach va thiet ung dung dat marketing") or ("bo sach ki thuat ung dung tai marketing"))*.