Perhaps you should try some spelling variations:
"bo bach mai thuat xung dung trong marketing" » "bo bach mai thuat xung dung tri marketing", "bo bach mai thuat xung dung tvqg marketing", "bo bach mai thuat dung dung trong marketing", "bo bach mai thuat hung dung trong marketing", "bo bach mai thuat song dung trong marketing", "bo bach mi thuat xung dung trong marketing", "bo bach ma thuat xung dung trong marketing", "bo bach giai thuat xung dung trong marketing", "bo bach mai thuat cung dung trong marketing", "bo bach mai thuat cuong dung trong marketing", "bo sach mai thuat xung dung trong marketing", "bo trach mai thuat xung dung trong marketing", "noi bach mai thuat xung 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 song 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: (("bo bach mai thuat xung 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: (("bo bach mai thuat xung dung trong marketing") OR ("co sach y thuat ung dung trong marketing")).
• Removing quotes may allow a broader search: (( bo bach mai thuat xung dung trong marketing ) or ( co sach y thuat ung dung trong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo bach mai thuat xung dung trong marketing") or ("co sach y thuat ung dung trong marketing"))*.