Perhaps you should try some spelling variations:
"series estudios peruanoss." » "series estudios peruanos.", "series estudios urbanos.", "serie estudios peruanoss.", "tres estudios peruanoss.", "leyes estudios peruanoss."
"serie estudio urbanos." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios peruanos.", "serie studia urbanos.", "serie estado urbanos."
"seis estudios urbano." » "seis estudios urbanos.", "seis estudio urbano.", "seis estudios peruanos.", "los estudios urbano.", "dos estudios urbano.", "dios estudios urbano."

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

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