Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politica publica.", "sobre politica publicaciones.", "sobre politicas publicas."
"ideas politicas public." » "ideas politicas publicad.", "ideas politica publica.", "ideas politicas pablo.", "las politicas public.", "ideologias politicas public."
"serie politicas publicas." » "serie politicas publicadas.", "serie politica publicaas.", "serie politicas pabloas.", "serie policiaca publicas."

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 politica publicas.") or ("ideas politicas public."))) or ("serie politicas publicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sobre politica publicas.") OR ("ideas politicas public."))) OR ("serie politicas publicas.")).
• Removing quotes may allow a broader search: (((( sobre politica publicas. ) or ( ideas politicas public. ))) or ( serie politicas publicas. )).
• Adding a wildcard symbol may retrieve word variants: (((("sobre politica publicas.") or ("ideas politicas public."))) or ("serie politicas publicas."))*.