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

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