Perhaps you should try some spelling variations:
"coleccion educacion, critica un debate." » "coleccion educacion, critica una debate.", "coleccion educacion, critica en debate.", "coleccion educacion, critica juan debate.", "coleccion educacion, critica el debate."
"coleccion educacion, critica de debate." » "coleccion educacion, critica del debate.", "coleccion educacion, critica el debate.", "coleccion educacion, critica en debate."

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: (("coleccion educacion, critica de debate.") or ("coleccion educacion, critica un debate."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("coleccion educacion, critica de debate.") OR ("coleccion educacion, critica un debate.")).
• Removing quotes may allow a broader search: (( coleccion educacion, critica de debate. ) or ( coleccion educacion, critica un debate. )).
• Adding a wildcard symbol may retrieve word variants: (("coleccion educacion, critica de debate.") or ("coleccion educacion, critica un debate."))*.