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