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