Perhaps you should try some spelling variations:
economic rationale » economics regional, economies national
economic agenda » economic agents, economic agent, economic agency
recherche aid » recherche mais, recherche a, recherche au
e recherche » de recherche, en recherche, et recherche
studi e » studi per, studia ve, studie 2

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: studi e recherche aid ((economic agenda) OR (economic rationale)) ;~.
• Adding a wildcard symbol may retrieve word variants: studi e recherche aid ((economic agenda) or (economic rationale)) ;*.