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