Perhaps you should try some spelling variations:
"series estudios urbanos." » "serie estudios urbanos.", "seis estudios urbanos.", "tres estudios urbanos."
"serie desafio susana." » "serie desafio cubano.", "serie ideario susana."
"otros estudios hispano." » "los estudios hispano.", "dos estudios hispano.", "etnicos estudios hispano.", "otros estudios hispana.", "otros estudios hispanic."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("series estudios urbanos.") or ("serie desafio susana."))) or ("otros estudios hispano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudios urbanos.") OR ("serie desafio susana."))) OR ("otros estudios hispano.")).
• Removing quotes may allow a broader search: (((( series estudios urbanos. ) or ( serie desafio susana. ))) or ( otros estudios hispano. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudios urbanos.") or ("serie desafio susana."))) or ("otros estudios hispano."))*.