Perhaps you should try some spelling variations:
"sobre politicas publico." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politico publico.", "sobre politica publico."
"serie politicas publica." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publicas.", "serie policiaca publica."
"obra politica publica." » "obra politicas publicas.", "obra politico publica.", "otra politica publica.", "oberta politica publica."

Try widening your search to All Fields.

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

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