Perhaps you should try some spelling variations:
"elite politica mexicana." » "elite politico mexicano.", "elite politica mexico.", "elite politica medica.", "elites politicas mexicana.", "etica politica mexicana.", "entre politica mexicana."
"serie politicas publicas." » "serie policiaca publicas."
"sobre politica publica." » "sobre politicas publica."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("sobre politica publica.") or ("serie politicas publicas."))) or ("elite politica mexicana."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sobre politica publica.") OR ("serie politicas publicas."))) OR ("elite politica mexicana."))*.
• Removing quotes may allow a broader search: (((( sobre politica publica. ) or ( serie politicas publicas. ))) or ( elite politica mexicana. ))*.