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