Perhaps you should try some spelling variations:
"sobre politicas publicad." » "sobre politicas publicas.", "sobre politica publicas.", "sobre politicos republica.", "serie politicas publicad."
"serie policiacas public." » "serie politicas publicas.", "serie policiaca public.", "serie politicas public.", "serie politica public."
"sobre politica publica." » "sobre 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 policiacas public.") or ("sobre politicas publicad."))) or ("sobre politica publica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie policiacas public.") OR ("sobre politicas publicad."))) OR ("sobre politica publica."))*.
• Removing quotes may allow a broader search: (((( serie policiacas public. ) or ( sobre politicas publicad. ))) or ( sobre politica publica. ))*.