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

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 publicad.") or ("etica politica publica."))) or ("serie politicas publico."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sobre politicas publicad.") OR ("etica politica publica."))) OR ("serie politicas publico."))*.
• Removing quotes may allow a broader search: (((( sobre politicas publicad. ) or ( etica politica publica. ))) or ( serie politicas publico. ))*.