Perhaps you should try some spelling variations:
"serie estudios hispanos." » "serie estudios hispano.", "serie estudios hispanicos.", "serie estudios espanoles."
"series estudioss urbano." » "series estudios urbano.", "seis estudios urbano.", "serie estudio urbano.", "series estudio urbano."
"dios estudios urbanos." » "dos estudios urbanos.", "los estudios urbanos.", "otros estudios urbanos."

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

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