Perhaps you should try some spelling variations:
"series estudioss peruanoss." » "series estudios peruanos.", "series estudios peruanoss.", "serie estudios peruanoss.", "seis estudios peruanoss."
"serie espacio urbano." » "serie espacio urbanismo.", "serie desafio urbano.", "serie estado urbano.", "serie estudio urbano."
"serie studia urbano." » "serie estudio urbano.", "serie estudios urbano.", "serie estudios urbanos."

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

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