Perhaps you should try some spelling variations:
"serie estudio urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie espacio urbano.", "series estudios urbano.", "serie estado urbano.", "serie estudos urbano."
"serie estudios hispano." » "series estudioss hispano.", "serie estados hispano.", "serie estudoss hispano."
"serie studia urbano." » "serie estudios urbano.", "serie estudios urbanos."

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

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