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