Perhaps you should try some spelling variations:
"little groups" » "little group", "simple groups", "pile groups"
"elite groups" » "like groups", "life groups", "line groups"
"lie groups" » "life groups", "like groups", "live groups"

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: (("elite groups") OR ((("little groups") OR ("lie groups")))).
• Removing quotes may allow a broader search: (( elite groups ) or ((( little groups ) or ( lie groups )))).
• Adding a wildcard symbol may retrieve word variants: (("elite groups") or ((("little groups") or ("lie groups"))))*.