Perhaps you should try some spelling variations:
"series estudios urbano." » "serie estudios urbano.", "seis estudios urbano.", "tres estudios urbano.", "series estudios urbanos.", "series estudios peruanos.", "series estudios hispano."
"serie studias urbanos." » "serie estudios urbanos.", "serie studia urbanos.", "serie guias urbanos."
"serie estudio urbano." » "serie estudios urbanos.", "serie espacio urbano.", "serie 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 studias urbanos.") or ((("serie estudio urbano.") OR ("series estudios urbano."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie studias urbanos.") OR ((("serie estudio urbano.") OR ("series estudios urbano.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie studias urbanos.\") or (((\"serie estudio urbano.\") OR (\"series estudios urbano.\"))))".
• Removing quotes may allow a broader search: (( serie studias urbanos. ) or ((( serie estudio urbano. ) OR ( series estudios urbano. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie studias urbanos.") or ((("serie estudio urbano.") OR ("series estudios urbano."))))*.