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