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