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