Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politica publica.", "sobre politica publicaciones.", "sobre politica publicaas.", "sobre politico publicoas.", "sobre politicas publicadas."
"serie politica public." » "serie politica publica.", "serie politico publico.", "serie politicas publicad.", "serie politicas public.", "serie policiaca public.", "elite politica public."
"sobre politicas publicas." » "serie politicas publicas."

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

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