Perhaps you should try some spelling variations:
"sobre politicas publica." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politica publica.", "sobre politicas publicasa.", "sobre politicas publicada.", "sobre politica publicaa.", "serie politicas publica."
"sobre politica publicaa." » "sobre politica publica.", "sobre politica publicas.", "sobre politicas publicas."
"sobre politicas public." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politica publica.", "serie politicas public."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("sobre politicas public.") OR ((("sobre politicas publica.") OR ("sobre politica publicaa."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"sobre politicas public.\") or (((\"sobre politicas publica.\") OR (\"sobre politica publicaa.\"))))~".
• Removing quotes may allow a broader search: (( sobre politicas public. ) or ((( sobre politicas publica. ) OR ( sobre politica publicaa. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("sobre politicas public.") or ((("sobre politicas publica.") OR ("sobre politica publicaa."))))*.