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

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

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