Perhaps you should try some spelling variations:
"serie estudios hispanicos." » "serie estudios historicos.", "serie estudios hispano.", "serie estudios islamicos."
"serie estudios hispanos." » "serie estudios hispano.", "serie estudios espanoles.", "serie estudios lesbianos."
"serie desafio urbano." » "serie desafio cubano.", "serie espacio urbano."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie desafio urbano.") or ((("serie estudios hispanos.") or ("serie estudios hispanicos."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie desafio urbano.") OR ((("serie estudios hispanos.") OR ("serie estudios hispanicos."))))*.
• Removing quotes may allow a broader search: (( serie desafio urbano. ) or ((( serie estudios hispanos. ) or ( serie estudios hispanicos. ))))*.