Perhaps you should try some spelling variations:
"partially accelerated" » "partially correlated", "partially integrated", "naturally accelerate"
"particle accelerated" » "particles accelerated", "particle acceleraton", "particle accelerators"
"particle accelerator" » "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 accelerated") OR ((("partially accelerated") OR ("particle accelerator")))).
• Removing quotes may allow a broader search: (( particle accelerated ) or ((( partially accelerated ) or ( particle accelerator )))).
• Adding a wildcard symbol may retrieve word variants: (("particle accelerated") or ((("partially accelerated") or ("particle accelerator"))))*.