Perhaps you should try some spelling variations:
"bo sac ky thuat ndung dung trong marketing" » "bo sac ky thuat ndung dung tri marketing", "bo sac ky thuat dung dung trong marketing", "bo sac ky thuat nhung dung trong marketing", "bo sac ky thuat ung dung trong marketing", "bo sach ky thuat ndung dung trong marketing", "bo cac ky thuat ndung dung trong marketing", "bo sai ky thuat ndung dung trong marketing"
"bo bach mai thuat hung dung tvqg marketing" » "bo bach mai thuat hung dung tri marketing", "bo bach mai thuat dung dung tvqg marketing", "bo bach mai thuat ung dung tvqg marketing", "bo bach mai thuat xung dung tvqg marketing", "bo bach mi thuat hung dung tvqg marketing", "bo bach ma thuat hung dung tvqg marketing", "bo bach giai thuat hung dung tvqg marketing", "bo bach mai thuat nhung dung tvqg marketing", "bo bach mai thuat phung dung tvqg marketing", "bo bach mai thuat hung dung tong marketing", "bo sach mai thuat hung dung tvqg marketing", "bo trach mai thuat hung dung tvqg marketing", "noi bach mai thuat hung dung tvqg 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 sac ky thuat ndung dung trong marketing") or ("bo bach mai thuat hung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sac ky thuat ndung dung trong marketing") OR ("bo bach mai thuat hung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( bo sac ky thuat ndung dung trong marketing ) or ( bo bach mai thuat hung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sac ky thuat ndung dung trong marketing") or ("bo bach mai thuat hung dung tvqg marketing"))*.