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 politica agraria." » "serie politica america.", "serie politicas agraria.", "serie policiaca agraria.", "elite politica agraria."
"sobre politica public." » "sobre politica publica.", "sobre politica publicas.", "sobre politico publico.", "sobre politicas public."

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