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