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