Perhaps you should try some spelling variations:
"serie politicas publico." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publica.", "serie policiaca publico."
"debates politicos luis." » "debate politico luis.", "debates politico luis.", "debates politicos las.", "debates politica luis."
"elites politicas luis." » "limites politicos luis.", "las politicas luis.", "ideas politicas luis.", "elites politica luis.", "elites politico luis.", "elites politicas las."

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: (((("elites politicas luis.") OR ("debates politicos luis."))) OR ("serie politicas publico."))~.
• Removing quotes may allow a broader search: (((( elites politicas luis. ) or ( debates politicos luis. ))) or ( serie politicas publico. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("elites politicas luis.") or ("debates politicos luis."))) or ("serie politicas publico."))*.