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

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 urbanos.") OR ("serie estudios hispanos."))))~.
• Removing quotes may allow a broader search: (( series estudioss urbano. ) or ((( series estudios urbanos. ) or ( serie estudios hispanos. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("series estudioss urbano.") or ((("series estudios urbanos.") or ("serie estudios hispanos."))))*.