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

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