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

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("series estudioss urbano.") OR ((("series estudios urbano.") OR ("serie estudios hispano."))))~.
• Removing quotes may allow a broader search: (( series estudioss urbano. ) or ((( series estudios urbano. ) or ( serie estudios hispano. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("series estudioss urbano.") or ((("series estudios urbano.") or ("serie estudios hispano."))))*.