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