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