Perhaps you should try some spelling variations:
"agriculture / ecological aspects / france" » "agriculture / biological aspects / france", "agriculture / sociological aspects / france", "agriculture / psychological aspects / france"
"agriculture / economic aspects / france" » "agriculture / economics aspects / france"

Try widening your search to All Fields.

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: (("agriculture / economic aspects / france") OR ("agriculture / ecological aspects / france")).
• Removing quotes may allow a broader search: (( agriculture / economic aspects / france ) or ( agriculture / ecological aspects / france )).
• Adding a wildcard symbol may retrieve word variants: (("agriculture / economic aspects / france") or ("agriculture / ecological aspects / france"))*.