Perhaps you should try some spelling variations:
"serie estudios peruanos." » "serie estudios americanos.", "serie estudios ensayos.", "serie estudios cervantinos."
"serie estudios peruanoss." » "serie estudios americanoss.", "serie estudios ensayoss.", "serie estudios cervantinoss."
"series estudios urbanos." » "seis estudios urbanos.", "tres estudios urbanos.", "leyes estudios urbanos."

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