Perhaps you should try some spelling variations:
"sociales estudios hispana." » "sociales estudios hispano.", "sociales estudios hispanicos.", "sociales estudios historia."
"series spain urbanismo." » "series espacio urbanismo.", "services spain urbanismo.", "shrines spain urbanismo.", "strikes spain urbanismo."
"series estudio urbano." » "series estudios urbano.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos.", "series espacio urbano."

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: (((("series estudio urbano.") or ("series spain urbanismo."))) or ("sociales estudios hispana."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudio urbano.") OR ("series spain urbanismo."))) OR ("sociales estudios hispana.")).
• Removing quotes may allow a broader search: (((( series estudio urbano. ) or ( series spain urbanismo. ))) or ( sociales estudios hispana. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudio urbano.") or ("series spain urbanismo."))) or ("sociales estudios hispana."))*.