Perhaps you should try some spelling variations:
"pparticle accelerations" » "particle accelerations", "particle acceleration", "particle accelerators"
"pparticle acceleraton" » "particle acceleraton", "particle acceleration", "particles acceleration"
"particle accelerator" » "particle accelerators", "particle acceleration"
"article accelerators" » "particle accelerators", "particle accelerations", "particle acceleraton"

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: (((((("pparticle acceleraton") OR ("particle accelerator"))) OR ("pparticle accelerations"))) OR ("article accelerators")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"pparticle acceleraton\") OR (\"particle accelerator\"))) or (\"pparticle accelerations\"))) or (\"article accelerators\"))".
• Removing quotes may allow a broader search: (((((( pparticle acceleraton ) OR ( particle accelerator ))) or ( pparticle accelerations ))) or ( article accelerators )).
• Adding a wildcard symbol may retrieve word variants: (((((("pparticle acceleraton") OR ("particle accelerator"))) or ("pparticle accelerations"))) or ("article accelerators"))*.