Perhaps you should try some spelling variations:
"particle accelerated" » "particles accelerated", "particle accelerator", "partially accelerated"
"particle acceleraton" » "particle accelerator", "particles acceleration", "particle accelerations"
"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 accelerators") OR ("particle acceleration"))) OR ((("particle accelerated") OR ("particle acceleraton")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"particle accelerators\") OR (\"particle acceleration\"))) or (((\"particle accelerated\") or (\"particle acceleraton\"))))".
• Removing quotes may allow a broader search: (((( particle accelerators ) OR ( particle acceleration ))) or ((( particle accelerated ) or ( particle acceleraton )))).
• Adding a wildcard symbol may retrieve word variants: (((("particle accelerators") OR ("particle acceleration"))) or ((("particle accelerated") or ("particle acceleraton"))))*.