Perhaps you should try some spelling variations:
"series estudios hispanos." » "series estudios hispano.", "series estudios hispanicos.", "series estudios espanoles.", "seis estudios hispanos.", "tres estudios hispanos.", "leyes estudios hispanos."
"serie estudio hispanic." » "serie estudios hispanicos.", "serie estudios hispano.", "serie studies hispanic.", "serie studia hispanic.", "serie estado hispanic.", "serie estudos hispanic."
"serie estudios urbanos." » "serie studias urbanos.", "serie estados urbanos.", "serie estudoss urbanos.", "serie 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: (((("serie estudio hispanic.") or ("series estudios hispanos."))) or ("serie estudios urbanos."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie estudio hispanic.") OR ("series estudios hispanos."))) OR ("serie estudios urbanos.")).
• Removing quotes may allow a broader search: (((( serie estudio hispanic. ) or ( series estudios hispanos. ))) or ( serie estudios urbanos. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie estudio hispanic.") or ("series estudios hispanos."))) or ("serie estudios urbanos."))*.