Perhaps you should try some spelling variations:
"sobre politicas publicad." » "sobre politicas publicas.", "sobre politica publicas.", "sobre politicos republica.", "sobre politicas publicasd.", "sobre politica publicasd.", "sobre politicos republicad.", "serie politicas publicad."
"sobre politicas publica." » "sobre politicas publicas.", "sobre politica publicas.", "sobre politicos republica.", "serie politicas publica."
"sobre politica publica." » "sobre politicas publicas."

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 publica.") OR ("sobre politicas publicad."))) OR ("sobre politica publica."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"sobre politicas publica.\") OR (\"sobre politicas publicad.\"))) or (\"sobre politica publica.\"))~".
• Removing quotes may allow a broader search: (((( sobre politicas publica. ) OR ( sobre politicas publicad. ))) or ( sobre politica publica. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politicas publica.") OR ("sobre politicas publicad."))) or ("sobre politica publica."))*.