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