Perhaps you should try some spelling variations:
"sobre politicas publicaa." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politica publica.", "sobre politicas publicasaa.", "sobre politicas publicadaa.", "sobre politica publicaaa."
"sobre politica publicaa." » "sobre politica publica.", "sobre politica publicas.", "sobre politicas publicas."
"serie politicas public." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publica.", "serie policiaca 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 politica publicaa.") OR ("sobre politicas publicaa."))) OR ("serie politicas public."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sobre politica publicaa.\") OR (\"sobre politicas publicaa.\"))) or (\"serie politicas public.\"))~".
• Removing quotes may allow a broader search: (((( sobre politica publicaa. ) OR ( sobre politicas publicaa. ))) or ( serie politicas public. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politica publicaa.") OR ("sobre politicas publicaa."))) or ("serie politicas public."))*.