Perhaps you should try some spelling variations:
"co sach dau thuan ung dung trong marketing" » "co sach dau thuan ung dung tri marketing", "co sach dau thuan ung dung tvqg marketing", "co sach mau thuan ung dung trong marketing", "co sach dau thuong ung dung trong marketing", "co sach dau thau ung dung trong marketing", "co sach dau thuat dung dung trong marketing", "co sach dau thuat hung dung trong marketing", "co sach dau thuat xung dung trong marketing", "co sach dao thuan ung dung trong marketing", "co sach dat thuan ung dung trong marketing", "bo sach dau thuan ung dung trong marketing", "cuon sach dau thuan ung dung trong marketing", "hoc sach dau thuan ung dung trong marketing"
"co sach y thuat ung dung trong marketing" » "co sach y thuat ung dung tri marketing", "co sach y thuat ung dung tvqg marketing", "co sach y thuat dung dung trong marketing", "co sach y thuat hung dung trong marketing", "co sach y thuat xung dung trong marketing", "bo sach y thuat ung dung trong marketing", "cuon sach y thuat ung dung trong marketing", "hoc sach y thuat ung dung trong marketing", "co sach ky thuat ung dung trong marketing", "co sach my thuat ung dung trong marketing", "co sach kxy thuat ung dung trong 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: (("co sach dau thuan ung dung trong marketing") or ("co sach y thuat ung dung trong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("co sach dau thuan ung dung trong marketing") OR ("co sach y thuat ung dung trong marketing")).
• Removing quotes may allow a broader search: (( co sach dau thuan ung dung trong marketing ) or ( co sach y thuat ung dung trong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("co sach dau thuan ung dung trong marketing") or ("co sach y thuat ung dung trong marketing"))*.