Perhaps you should try some spelling variations:
"limites politicos publica." » "lideres politicos publica.", "debates politicos publica.", "limites juridicos publica.", "limites politicos republica.", "limites politicas publicas.", "limites politicas publicad."
"serie politicas public." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publica.", "serie policiaca public."
"sobre politica pablo." » "sobre politicas pablo.", "sobre politica para.", "sobre colica pablo.", "sobre politica al."

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