Perhaps you should try some spelling variations:
"bo sach ky thuat ung dung tri marketing" » "bo sach ky thuat ung dung trong marketing", "bo sach ky thuat ung dung tvqg marketing", "bo sach ky thuat ung dung _ marketing", "bo sach ky thuat dung dung tri marketing", "bo sach ky thuat hung dung tri marketing", "bo sach ky thuat xung dung tri marketing", "bo sach ky thuat ung dung tai marketing", "bo sach ky thuat ung dung tren marketing", "bo sach ky thuat ung dung sai marketing", "co sach ky thuat ung dung tri marketing", "hoc sach ky thuat ung dung tri marketing", "bo sac ky thuat ung dung tri marketing", "bo sach y thuat ung dung tri marketing", "bo sach ty thuat ung dung tri marketing"
"bo sach va thuc ung dung dat marketing" » "bo sach va thuc ung dung tac marketing", "bo sach va thuc ung dung van marketing", "bo sach va thuc ung dung thuat marketing", "bo sach va thuc dung dung dat marketing", "bo sach va thuc cung dung dat marketing", "bo sach va thuc uong dung dat marketing", "bo sach va thuc ung dung va marketing", "bo sach va thuc ung dung tai marketing", "co sach va thuc ung dung dat marketing", "hoc sach va thuc ung dung dat marketing", "bo sach xa thuc ung dung dat marketing", "bo sach ha thuc ung dung dat marketing", "bo sach dao thuc 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 thuc ung dung dat marketing") or ("bo sach ky thuat ung dung tri marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach va thuc ung dung dat marketing") OR ("bo sach ky thuat ung dung tri marketing"))*.
• Removing quotes may allow a broader search: (( bo sach va thuc ung dung dat marketing ) or ( bo sach ky thuat ung dung tri marketing ))*.