Perhaps you should try some spelling variations:
"series estudios urbanos." » "series estudio urbanos.", "series estudios peruanoss.", "series estudios hispanos.", "serie estudios urbanos.", "seis estudios urbanos.", "tres estudios urbanos."
"series estudios urbano." » "series estudio urbano.", "series estudios peruanos.", "series estudios hispano.", "serie estudios urbano.", "seis estudios urbano.", "tres estudios urbano."
"series espacio urbano." » "series spain urbano.", "versus espacio urbano.", "sociales espacio urbano.", "series espacio urbanismo."

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 urbanos.") or ("series espacio urbano."))) or ("series estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudios urbanos.") OR ("series espacio urbano."))) OR ("series estudios urbano."))*.
• Removing quotes may allow a broader search: (((( series estudios urbanos. ) or ( series espacio urbano. ))) or ( series estudios urbano. ))*.