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

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 hispanos.") or ((("serie estado urbano.") or ("series estudios urbanos."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("series estudios hispanos.") OR ((("serie estado urbano.") OR ("series estudios urbanos."))))*.
• Removing quotes may allow a broader search: (( series estudios hispanos. ) or ((( serie estado urbano. ) or ( series estudios urbanos. ))))*.