Perhaps you should try some spelling variations:
"serie estudiosss urbano." » "serie estudios urbano.", "serie estudios urbanos.", "series estudios urbano.", "serie estudio urbano."
"series estudio urbano." » "series estudios urbano.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos."
"series espacio urbano." » "series spain urbano.", "versus espacio urbano.", "sociales espacio urbano.", "series espacio urbanismo."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("series estudio urbano.") OR ("series espacio urbano."))) or ("serie estudiosss urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudio urbano.") OR ("series espacio urbano."))) OR ("serie estudiosss urbano.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"series estudio urbano.\") OR (\"series espacio urbano.\"))) or (\"serie estudiosss urbano.\"))".
• Removing quotes may allow a broader search: (((( series estudio urbano. ) OR ( series espacio urbano. ))) or ( serie estudiosss urbano. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudio urbano.") OR ("series espacio urbano."))) or ("serie estudiosss urbano."))*.