Perhaps you should try some spelling variations:
"economic interactionsism" » "economic interactions", "economic intersections", "dynamic interactionism", "economic interactionssism", "economic integrationsism", "dynamic interactionsism"
"economic interpretation" » "economic integration", "okonomische interpretation", "semantic interpretation"
"economic intervention" » "economic integration", "economic interactions", "economic information"
"economic interaction" » "economic interactions", "economic integration", "dynamic interaction"

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