Perhaps you should try some spelling variations:
"difusion mal estudios" » "difusion del estudios", "difusion a estudios", "difusion el estudios", "difusion leal estudios", "difusion car estudios", "difusion ma estudios", "difusion mleal estudios", "difusion mapu estudios", "difusion mel estudios"
"difusion al estudio" » "difusion a estudio", "difusion el estudio", "difusion del estudio"
"difusion al estudios" » "difusion a estudios", "difusion el estudios", "difusion del estudios", "difusion leal estudios", "difusion apu estudios"

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: (("difusion al estudio") or ((("difusion al estudios") or ("difusion mal estudios"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("difusion al estudio") OR ((("difusion al estudios") OR ("difusion mal estudios")))).
• Removing quotes may allow a broader search: (( difusion al estudio ) or ((( difusion al estudios ) or ( difusion mal estudios )))).
• Adding a wildcard symbol may retrieve word variants: (("difusion al estudio") or ((("difusion al estudios") or ("difusion mal estudios"))))*.