Perhaps you should try some spelling variations:
"particles acceleratedd" » "particles accelerated", "particles acceleration", "particle acceleration"
"particle accelerate" » "particles accelerated", "particle accelerator", "particle acceleraton"
"particle accelerators" » "particle accelerator", "particle accelerated", "particle acceleration"

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