Perhaps you should try some spelling variations:
"series estudios peruanos." » "series estudios urbanos.", "series estudios americanos.", "series estudios ensayos.", "serie estudios peruanos.", "seis estudios peruanos.", "tres estudios peruanos."
"ingles estudio urbano." » "inglesa estudio urbano.", "ingles estudios urbano.", "ingles estudios urbanos.", "ingles espacio urbano."
"reales estudio urbano." » "reales estudios urbano.", "reales estudios urbanos.", "reales espacio urbano.", "senales estudio urbano.", "redes estudio urbano."

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