Perhaps you should try some spelling variations:
"reales estudios peruanoss." » "reales estudios peruanos.", "reales estudios urbanos.", "reales estudio peruanoss.", "rurales estudios peruanoss.", "locales estudios peruanoss."
"seis estudios peruanoss." » "seis estudios peruanos.", "seis estudios urbanos.", "los estudios peruanoss.", "dos estudios peruanoss.", "dios estudios peruanoss."
"series estudio urbano." » "series estudios urbano.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos.", "series espacio urbano."

You may be able to get more results by adjusting your search query.

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