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