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 studias urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie estudio urbano.", "serie studia urbano.", "serie guias urbano."
"serie espacio urbano." » "serie espacio urbanismo.", "serie desafio urbano.", "serie estado urbano.", "serie estudio 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 studias urbano.") or ("serie espacio urbano."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("series estudios peruanoss.") OR ((("serie studias urbano.") OR ("serie espacio urbano."))))*.
• Removing quotes may allow a broader search: (( series estudios peruanoss. ) or ((( serie studias urbano. ) or ( serie espacio urbano. ))))*.