Perhaps you should try some spelling variations:
"serie estudios peruanoss." » "serie estudios peruanos.", "serie estudios urbanos.", "series estudioss peruanoss.", "serie studias peruanoss.", "serie estados peruanoss."
"series estudioss urbano." » "series estudios urbano.", "seis estudios urbano.", "serie estudos urbano.", "series estudios urbanos.", "series estudio urbano."
"serie estudio urbanos." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos.", "serie studia urbanos.", "serie estado 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 peruanoss.") or ("serie estudio urbanos."))) or ("series estudioss urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie estudios peruanoss.") OR ("serie estudio urbanos."))) OR ("series estudioss urbano.")).
• Removing quotes may allow a broader search: (((( serie estudios peruanoss. ) or ( serie estudio urbanos. ))) or ( series estudioss urbano. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie estudios peruanoss.") or ("serie estudio urbanos."))) or ("series estudioss urbano."))*.