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