Perhaps you should try some spelling variations:
"series estudios urbanos." » "serie estudios urbanos.", "seis estudios urbanos.", "tres estudios urbanos.", "series estudio urbanos.", "series estudios peruanoss.", "series estudios hispanos."
"reales estudios urbano." » "reales estudio urbano.", "rurales estudios urbano.", "locales estudios urbano.", "reales estudios peruanos.", "reales estudios hispano."
"ingles espacio urbano." » "angeles espacios urbano.", "ingles espanol urbano.", "ingles estudio urbano.", "ingles espacio urbanismo."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("ingles espacio urbano.") or ("series estudios urbanos."))) or ("reales estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ingles espacio urbano.") OR ("series estudios urbanos."))) OR ("reales estudios urbano.")).
• Removing quotes may allow a broader search: (((( ingles espacio urbano. ) or ( series estudios urbanos. ))) or ( reales estudios urbano. )).
• Adding a wildcard symbol may retrieve word variants: (((("ingles espacio urbano.") or ("series estudios urbanos."))) or ("reales estudios urbano."))*.