Perhaps you should try some spelling variations:
"sobre politicas public." » "sobre politicas publicad.", "sobre politica publica.", "sobre politica publicas.", "sobre politica public."
"serie politicas publicas." » "serie politicas publicadas.", "serie politica publicaas.", "serie politica publicasas.", "serie policiaca publicas.", "serie politicas publica.", "serie politicas publico."
"etica politica pabload." » "etica politica pablo.", "etica politica paolo.", "etica politicas pablo.", "publica politica pabload."

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 public.") OR ("etica politica pabload."))) OR ("serie politicas publicas."))~.
• Removing quotes may allow a broader search: (((( sobre politicas public. ) or ( etica politica pabload. ))) or ( serie politicas publicas. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politicas public.") or ("etica politica pabload."))) or ("serie politicas publicas."))*.