Perhaps you should try some spelling variations:
"economic intervention" » "economic interpretation", "economic integration", "economic information"
"economic interactions" » "economic integration", "dynamic interactions", "economics international", "economic integrations", "economic informations"
"economic interaction" » "economic integration", "dynamic interaction", "economic information"

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 intervention") OR ((("economic interactions") OR ("economic interaction")))).
• Removing quotes may allow a broader search: (( economic intervention ) or ((( economic interactions ) or ( economic interaction )))).
• Adding a wildcard symbol may retrieve word variants: (("economic intervention") or ((("economic interactions") or ("economic interaction"))))*.