Perhaps you should try some spelling variations:
"economiques politiques" » "historiques politiques"
"oeconomique politique" » "d'economie politique", "l'oeconomie politique", "d'oeconomie politique"
"l'economie politique" » "d'economie politique"

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: (("economie politique") OR ((((("oeconomique politique") OR ("economiques politiques"))) OR ("l'economie politique")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"economie politique\") or (((((\"oeconomique politique\") OR (\"economiques politiques\"))) or (\"l'economie politique\"))))".
• Removing quotes may allow a broader search: (( economie politique ) or ((((( oeconomique politique ) OR ( economiques politiques ))) or ( l'economie politique )))).
• Adding a wildcard symbol may retrieve word variants: (("economie politique") or ((((("oeconomique politique") OR ("economiques politiques"))) or ("l'economie politique"))))*.