Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politica publica.", "sobre politica publicaciones."
"sobre politicas publicas." » "serie politicas publicas."
"ser criticos republica." » "sus criticos republica.", "de criticos republica.", "der criticism republica.", "ser criticos publica."

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 politica publicas.") OR ("sobre politicas publicas."))) OR ("ser criticos republica."))~.
• Removing quotes may allow a broader search: (((( sobre politica publicas. ) or ( sobre politicas publicas. ))) or ( ser criticos republica. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politica publicas.") or ("sobre politicas publicas."))) or ("ser criticos republica."))*.