Perhaps you should try some spelling variations:
"series estudios peruanoss." » "series estudios peruanos.", "series estudios urbanos.", "serie estudios peruanoss.", "seis estudios peruanoss.", "tres estudios peruanoss."
"serie estudioss urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios urbano.", "serie estudos urbano."
"series estudios urbano." » "serie estudios urbano.", "seis estudios urbano.", "tres estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios peruanos."

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