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