Perhaps you should try some spelling variations:
"serie estudios peruanoss." » "serie estudios peruanos.", "serie estudios urbanos."
"serie estudios urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios peruanos."
"series estudios hispano." » "seis estudios hispano.", "tres estudios hispano.", "leyes estudios hispano.", "series estudios hispana.", "series estudios hispanic."

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