Perhaps you should try some spelling variations:
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"hoc cac ky thuat ung dung tri marketing" » "hoc cac ky thuat ung dung trong marketing", "hoc cac ky thuat ung dung _ marketing", "hoc cac ky thuat ung dung cuu marketing", "hoc cac ky thuat dung dung tri marketing", "hoc cac ky thuat hung dung tri marketing", "hoc cac ky thuat xung dung tri marketing", "hoc cac ky thuat ung dung tai marketing", "hoc cac ky thuat ung dung tren marketing", "hoc cac ky thuat ung dung sai marketing", "hoc cao ky thuat ung dung tri marketing"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("hoc cac ky thuat ung dung tri marketing") or ("hoc sach kxy thuat ung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("hoc cac ky thuat ung dung tri marketing") OR ("hoc sach kxy thuat ung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( hoc cac ky thuat ung dung tri marketing ) or ( hoc sach kxy thuat ung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("hoc cac ky thuat ung dung tri marketing") or ("hoc sach kxy thuat ung dung tvqg marketing"))*.