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