Perhaps you should try some spelling variations:
"reales estudios hispanic." » "reales estudios hispanicos.", "reales estudios hispano.", "reales studies hispanic.", "reales estudio hispanic.", "rurales estudios hispanic.", "locales estudios hispanic."
"series estudios urbano." » "seis estudios urbano.", "tres estudios urbano.", "leyes estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios peruanos."
"serie estudios urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios peruanos."

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