Perhaps you should try some spelling variations:
"economic interventionism" » "economic interventions", "ergonomic interventions", "economic intersections", "economic interactionism", "economic interpretationism", "economic integrationism"
"economic interactionism" » "economic interaction", "economic intersections", "dynamic interactionism"
"economic interactions" » "economic integration", "dynamic interactions", "economics international"
"economic intervention" » "economic interaction", "economic interpretation", "economic integration"

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 interactionism") OR ("economic interactions"))))) OR ("economic intervention")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"economic interventionism\") or (((\"economic interactionism\") OR (\"economic interactions\"))))) or (\"economic intervention\"))".
• Removing quotes may allow a broader search: (((( economic interventionism ) or ((( economic interactionism ) OR ( economic interactions ))))) or ( economic intervention )).
• Adding a wildcard symbol may retrieve word variants: (((("economic interventionism") or ((("economic interactionism") OR ("economic interactions"))))) or ("economic intervention"))*.