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

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