Perhaps you should try some spelling variations:
"serie estudios hispanos." » "serie estudios hispano.", "serie estudios hispanicos.", "serie estudios espanoles."
"series estudioss urbano." » "series estudios urbano.", "seis estudios urbano.", "serie estudio urbano.", "series estudios urbanos.", "series estudio urbano."
"dos estudios urbano." » "dos estudios urbanos.", "dos estudio urbano.", "dos estudios peruanos.", "los estudios 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 estudioss urbano.") or ("dos estudios urbano."))) or ("serie estudios hispanos."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudioss urbano.") OR ("dos estudios urbano."))) OR ("serie estudios hispanos.")).
• Removing quotes may allow a broader search: (((( series estudioss urbano. ) or ( dos estudios urbano. ))) or ( serie estudios hispanos. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudioss urbano.") or ("dos estudios urbano."))) or ("serie estudios hispanos."))*.