Perhaps you should try some spelling variations:
"series estudioss urbano." » "series estudios urbano.", "serie estudios urbano.", "seis estudios urbano.", "series estudios urbanos.", "series estudiosss urbano.", "serie estudioss urbano.", "serie estudiosss urbano."
"tres estudios urbano." » "tres estudios urbanos.", "tres estudios peruanos.", "tres estudios hispano.", "otros estudios urbano.", "los estudios urbano.", "dos estudios urbano."
"series estudio urbano." » "series estudios urbano.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos.", "series espacio 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 urbano."))) or ("tres estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudioss urbano.") OR ("series estudio urbano."))) OR ("tres estudios urbano."))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"series estudioss urbano.\") OR (\"series estudio urbano.\"))) or (\"tres estudios urbano.\"))*".
• Removing quotes may allow a broader search: (((( series estudioss urbano. ) OR ( series estudio urbano. ))) or ( tres estudios urbano. ))*.