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