Perhaps you should try some spelling variations:
"series estudioss urbano." » "series estudios urbano.", "serie estudio urbano.", "serie estudos urbano.", "series estudio urbano."
"seis estudios urbanos." » "los estudios urbanos.", "dos estudios urbanos.", "dios estudios urbanos."
"serie estudios hispano." » "serie estudios hispana.", "serie 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 estudioss urbano.") or ("seis estudios urbanos."))) or ("serie estudios hispano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudioss urbano.") OR ("seis estudios urbanos."))) OR ("serie estudios hispano."))*.
• Removing quotes may allow a broader search: (((( series estudioss urbano. ) or ( seis estudios urbanos. ))) or ( serie estudios hispano. ))*.