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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("limites politicos luis.") or ("debates politicos luis."))) or ("serie politicas publico."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("limites politicos luis.") OR ("debates politicos luis."))) OR ("serie politicas publico."))*.
• Removing quotes may allow a broader search: (((( limites politicos luis. ) or ( debates politicos luis. ))) or ( serie politicas publico. ))*.