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 doi 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 thuat ung dung sai marketing" » "bo sach va thuat ung dung tac marketing", "bo sach va thuat ung dung van marketing", "bo sach va thuat ung dung thi marketing", "bo sach va thuat dung dung sai marketing", "bo sach va thuat hung dung sai marketing", "bo sach va thuat xung dung sai marketing", "bo sach ki thuat ung dung sai marketing", "bo sach va thuc ung dung sai marketing", "bo sach va thiet ung dung sai marketing", "bo sach va thuat ung dung tai marketing", "bo sach va thuat ung dung va marketing", "bo sach va thuat ung dung dat marketing", "co sach va thuat ung dung sai marketing", "hoc sach va thuat ung dung sai marketing", "bo sach xa thuat ung dung sai marketing", "bo sach ha thuat ung dung sai marketing", "bo sach dao thuat ung dung sai 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 thuat ung dung sai 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 thuat ung dung sai marketing") OR ("bo sach ky thuat ung dung tri marketing"))*.
• Removing quotes may allow a broader search: (( bo sach va thuat ung dung sai marketing ) or ( bo sach ky thuat ung dung tri marketing ))*.