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

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 ((("elite politica mexicana.") OR ("elite politica medica."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("sobre politica publica.") OR ((("elite politica mexicana.") OR ("elite politica medica."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"sobre politica publica.\") or (((\"elite politica mexicana.\") OR (\"elite politica medica.\"))))*".
• Removing quotes may allow a broader search: (( sobre politica publica. ) or ((( elite politica mexicana. ) OR ( elite politica medica. ))))*.