Perhaps you should try some spelling variations:
"rurales estudios hispana." » "locales estudios hispana.", "morales estudio hispana.", "reales estudio hispana.", "rurales estudios hispanicos.", "rurales estudios historia."
"reales estudios hispano." » "reales estudio hispano.", "locales estudios hispano.", "leyes estudios hispano.", "reales estudios hispanic."
"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 ((("rurales estudios hispana.") or ("reales estudios hispano."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("series estudio urbano.") OR ((("rurales estudios hispana.") OR ("reales estudios hispano.")))).
• Removing quotes may allow a broader search: (( series estudio urbano. ) or ((( rurales estudios hispana. ) or ( reales estudios hispano. )))).
• Adding a wildcard symbol may retrieve word variants: (("series estudio urbano.") or ((("rurales estudios hispana.") or ("reales estudios hispano."))))*.