Perhaps you should try some spelling variations:
"economic interventionism" » "economic intervention", "ergonomic interventions", "economic intersections"
"economic interpretation" » "economic integration", "okonomische interpretation", "semantic interpretation"
"economic interventions" » "economic intervention", "ergonomic interventions", "economic intersections"

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: (((("economic interventionism") OR ("economic interventions"))) OR ("economic interpretation")).
• Removing quotes may allow a broader search: (((( economic interventionism ) or ( economic interventions ))) or ( economic interpretation )).
• Adding a wildcard symbol may retrieve word variants: (((("economic interventionism") or ("economic interventions"))) or ("economic interpretation"))*.