Perhaps you should try some spelling variations:
"sobre politicas publicad." » "sobre politicas publicas.", "sobre politica publica.", "sobre politicos republica.", "sobre politica publicad."
"entre politica publicas." » "entre politicas publicas.", "entre politica publica.", "entre politica publicaciones.", "sobre politica publicas."
"serie politicas publico." » "serie politicas publicas.", "serie politica publica.", "serie politico publico.", "serie policiaca publico."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("entre politica publicas.") or ("serie politicas publico."))) or ("sobre politicas publicad."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("entre politica publicas.") OR ("serie politicas publico."))) OR ("sobre politicas publicad.")).
• Removing quotes may allow a broader search: (((( entre politica publicas. ) or ( serie politicas publico. ))) or ( sobre politicas publicad. )).
• Adding a wildcard symbol may retrieve word variants: (((("entre politica publicas.") or ("serie politicas publico."))) or ("sobre politicas publicad."))*.