Perhaps you should try some spelling variations:
"serie estudios urbanos." » "serie estudio urbanos.", "serie estudios peruanoss.", "serie estudios hispanos."
"series estudios urbano." » "series estudio urbano.", "series estudios peruanos.", "series estudios hispano.", "seis estudios urbano.", "tres estudios urbano.", "leyes estudios urbano."
"serie studia urbanos." » "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: (((("serie studia urbanos.") or ("serie estudios urbanos."))) or ("series estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie studia urbanos.") OR ("serie estudios urbanos."))) OR ("series estudios urbano."))*.
• Removing quotes may allow a broader search: (((( serie studia urbanos. ) or ( serie estudios urbanos. ))) or ( series estudios urbano. ))*.