Perhaps you should try some spelling variations:
"series estudios urbanos." » "serie estudios urbanos.", "seis estudios urbanos.", "tres estudios urbanos."
"series estudios hispano." » "serie estudios hispano.", "seis estudios hispano.", "tres estudios hispano.", "series estudios hispana.", "series estudios hispanic."
"seire estudio urbano." » "seire estudios urbano.", "seire espacio urbano.", "serie estudio urbano.", "sangre estudio urbano."

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

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