Perhaps you should try some spelling variations:
"serie estados peruanoss." » "serie estado peruano.", "serie estudios peruanos.", "serie estado peruanoss.", "serie estudos peruanoss.", "serie estudios peruanoss."
"series estudioss urbano." » "series estudios urbano.", "serie estudios urbano.", "seis estudios 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."

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