Perhaps you should try some spelling variations:
"serie estudios peruanoss." » "serie estudios urbanos.", "serie estudios urbanoss.", "serie estudios americanoss.", "serie estudios ensayoss."
"serie estudios peruanos." » "serie estudios urbanos.", "serie estudios americanos.", "serie estudios ensayos."
"serie estudios urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios hispano."

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 peruanos."))) or ("serie estudios peruanoss."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie estudios urbano.") OR ("serie estudios peruanos."))) OR ("serie estudios peruanoss.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"serie estudios urbano.\") OR (\"serie estudios peruanos.\"))) or (\"serie estudios peruanoss.\"))".
• Removing quotes may allow a broader search: (((( serie estudios urbano. ) OR ( serie estudios peruanos. ))) or ( serie estudios peruanoss. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie estudios urbano.") OR ("serie estudios peruanos."))) or ("serie estudios peruanoss."))*.