Perhaps you should try some spelling variations:
"particle accelerating" » "particle accelerations", "particle acceleration", "particles acceleration"
"particle accelerator" » "particle accelerators", "particle acceleration"
"particle accelerated" » "particles accelerated", "particle accelerators", "particle acceleration", "particles acceleratedd", "particle acceleratorsd", "particle accelerationd"
"particle acceleraton" » "particle acceleration", "particles acceleration", "particle accelerations"
"particle accelerate" » "particles accelerated", "particle accelerators", "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 accelerator") OR ((((("particle accelerating") OR ("particle accelerate"))) OR ((("particle accelerated") OR ("particle acceleraton")))))).
• Removing quotes may allow a broader search: (( particle accelerator ) or ((((( particle accelerating ) or ( particle accelerate ))) or ((( particle accelerated ) or ( particle acceleraton )))))).
• Adding a wildcard symbol may retrieve word variants: (("particle accelerator") or ((((("particle accelerating") or ("particle accelerate"))) or ((("particle accelerated") or ("particle acceleraton"))))))*.