Perhaps you should try some spelling variations:
"particle accelerations" » "particles acceleration", "particle accelerator", "particle concentrations"
"partially accelerated" » "particle accelerator", "partially correlated", "partially integrated"
"particle accelerated" » "particles accelerated", "particle accelerator", "practice accelerated"
"particle acceleraton" » "particle accelerator", "particles acceleration", "pareticle acceleration"
"particle accelerators" » "particle accelerator", "particle accelerate", "particle accelerating"

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