Perhaps you should try some spelling variations:
"bo sach ky thuat xung dung trong marketing" » "bo sach ky thuat xung dung tri marketing", "bo sach ky thuat xung dung tvqg marketing", "bo sach ky thuat dung dung trong marketing", "bo sach ky thuat hung dung trong marketing", "bo sach ky thuat song dung trong marketing", "bo sach ky thuat cung dung trong marketing", "bo sach ky thuat cuong dung trong marketing", "co sach ky thuat xung dung trong marketing", "hoc sach ky thuat xung dung trong marketing", "bo sac ky thuat xung dung trong marketing", "bo sach y thuat xung dung trong marketing", "bo sach ty thuat xung dung trong marketing"
"co cau ky thuat ung dung sai marketing" » "co cau ky thuat ung dung tri marketing", "co cau ky thuat ung dung tac marketing", "co cau ky thuat ung dung van marketing", "co cau ky thuat dung dung sai marketing", "co cau ky thuat hung dung sai marketing", "co cau ky thuat song dung sai marketing", "co cau ky thuat ung dung tai marketing", "co cau ky thuat ung dung va marketing", "co cau ky thuat ung dung dat marketing", "bo cau ky thuat ung dung sai marketing", "co cao ky thuat ung dung sai marketing", "co cac ky thuat ung dung sai marketing", "co chu ky thuat ung dung sai 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 ky thuat xung dung trong marketing") or ("co cau ky thuat ung dung sai marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach ky thuat xung dung trong marketing") OR ("co cau ky thuat ung dung sai marketing")).
• Removing quotes may allow a broader search: (( bo sach ky thuat xung dung trong marketing ) or ( co cau ky thuat ung dung sai marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach ky thuat xung dung trong marketing") or ("co cau ky thuat ung dung sai marketing"))*.