Perhaps you should try some spelling variations:
"series estudios urbanos." » "seis estudios urbanos.", "tres estudios urbanos.", "leyes estudios urbanos.", "series estudio urbanos.", "series estudios peruanoss.", "series d'estudis urbanss."
"series estudios hispano." » "seis estudios hispano.", "tres estudios hispano.", "leyes estudios hispano.", "series estudios hispana.", "series estudios hispanic."
"serie estudios urbano." » "serie estudio urbano.", "serie estudios peruanos.", "serie d'estudis urbans."

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