Perhaps you should try some spelling variations:
"serie desafio urbanismo." » "serie espacio urbanismo."
"series estudio urbano." » "series estudios urbano.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos.", "series espacio urbano."
"tres estudios hispano." » "otros estudios hispano.", "los estudios hispano.", "dos estudios hispano.", "tres estudios hispana.", "tres estudios hispanic."

Try widening your search to All Fields.

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 ("serie desafio urbanismo."))) or ("tres estudios hispano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudio urbano.") OR ("serie desafio urbanismo."))) OR ("tres estudios hispano.")).
• Removing quotes may allow a broader search: (((( series estudio urbano. ) or ( serie desafio urbanismo. ))) or ( tres estudios hispano. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudio urbano.") or ("serie desafio urbanismo."))) or ("tres estudios hispano."))*.