Perhaps you should try some spelling variations:
"particle accelerations" » "particle acceleration", "particles acceleration", "particle accelerator"
"article accelerators" » "particle accelerator", "particle acceleraton", "particelle acceleratori"
"particle accelerators" » "pparticle accelerator", "pparticle acceleraton", "pparticelle acceleratori"

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: (("article accelerators") OR ((("particle accelerations") OR ("particle accelerators")))).
• Removing quotes may allow a broader search: (( article accelerators ) or ((( particle accelerations ) or ( particle accelerators )))).
• Adding a wildcard symbol may retrieve word variants: (("article accelerators") or ((("particle accelerations") or ("particle accelerators"))))*.