Perhaps you should try some spelling variations:
"particles acceleration" » "particle acceleration", "parallel acceleration", "particles application"
"particles accelerated" » "partially accelerated", "lattices accelerated", "particle acceleration"
"particle accelerator" » "particle acceleration"
"particle accelerators" » "particle accelerations", "particle accelerating"
"particle acceleraton" » "particle acceleration", "particle accelerations", "pareticle acceleration"
"particle accelerate" » "particle acceleration", "practice accelerate", "particle accelerations"

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") OR ("particles acceleration")))))))).
• 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\") OR (\"particles acceleration\"))))))))".
• Removing quotes may allow a broader search: (( particle accelerator ) or ((((( particle accelerators ) or ( particle accelerate ))) or ((( particle acceleraton ) or ((( particles accelerated ) OR ( particles acceleration )))))))).
• Adding a wildcard symbol may retrieve word variants: (("particle accelerator") or ((((("particle accelerators") or ("particle accelerate"))) or ((("particle acceleraton") or ((("particles accelerated") OR ("particles acceleration"))))))))*.