Perhaps you should try some spelling variations:
"free magnetic lesions" » "free magnetic regions", "free magnetic response", "free magnetic ions"
"french robot mission" » "french robots mission", "french robotic mission", "french robust mission", "french robert mission", "french abbot mission", "french room mission"

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: (("french robot mission") OR ("free magnetic lesions")).
• Removing quotes may allow a broader search: (( french robot mission ) or ( free magnetic lesions )).
• Adding a wildcard symbol may retrieve word variants: (("french robot mission") or ("free magnetic lesions"))*.