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