Perhaps you should try some spelling variations:
"seis estudioss urbano." » "seis estudios urbanos.", "seis estudio urbano.", "seis estudios urbano.", "mis estudios urbano.", "seire estudios urbano."
"serie estudioss urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios urbano.", "serie estudos urbano."
"series estudios urbano." » "serie estudios urbano.", "seis estudios urbano.", "tres estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios peruanos."

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

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