Perhaps you should try some spelling variations:
"cao sach ky thuat ung dung trong marketing" » "cao sach ky thuat ung dung tri marketing", "cao sach ky thuat ung dung tvqg marketing", "cao sach ky thuat dung dung trong marketing", "cao sach ky thuat hung dung trong marketing", "cao sach ky thuat song dung trong marketing", "ao sach ky thuat ung dung trong marketing", "cau sach ky thuat ung dung trong marketing", "lao sach ky thuat ung dung trong marketing", "cao sac ky thuat ung dung trong marketing", "cao sach y thuat ung dung trong marketing", "cao sach ty thuat ung dung trong marketing"
"co sach my thuat xung dung trong marketing" » "co sach my thuat xung dung tri marketing", "co sach my thuat xung dung tvqg marketing", "co sach my thuat dung dung trong marketing", "co sach my thuat hung dung trong marketing", "co sach my thuat song dung trong marketing", "co sach my thuat cung dung trong marketing", "co sach my thuat cuong dung trong marketing", "co sach ki thuat xung dung trong marketing", "co sach va thuat xung dung trong marketing", "bo sach my thuat xung dung trong marketing", "cuon sach my thuat xung dung trong marketing", "hoc sach my thuat xung dung trong marketing", "co sach y thuat xung dung trong marketing", "co sach ty thuat xung dung trong marketing", "co sach mau thuat xung dung trong marketing"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("cao sach ky thuat ung dung trong marketing") or ("co sach my thuat xung dung trong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cao sach ky thuat ung dung trong marketing") OR ("co sach my thuat xung dung trong marketing"))*.
• Removing quotes may allow a broader search: (( cao sach ky thuat ung dung trong marketing ) or ( co sach my thuat xung dung trong marketing ))*.