Perhaps you should try some spelling variations:
"series estudios peruanos." » "series estudios urbanos.", "series estudios americanos.", "series estudios ensayos.", "serie estudios peruanos.", "seis estudios peruanos.", "tres estudios peruanos."
"serie estudioss urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios urbano.", "serie estudos urbano."
"series estudios urbano." » "serie estudios urbano.", "seis estudios urbano.", "tres estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios hispano."

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 estudioss urbano.") or ((("series estudios urbano.") OR ("series estudios peruanos."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie estudioss urbano.") OR ((("series estudios urbano.") OR ("series estudios peruanos.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie estudioss urbano.\") or (((\"series estudios urbano.\") OR (\"series estudios peruanos.\"))))".
• Removing quotes may allow a broader search: (( serie estudioss urbano. ) or ((( series estudios urbano. ) OR ( series estudios peruanos. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie estudioss urbano.") or ((("series estudios urbano.") OR ("series estudios peruanos."))))*.