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