Perhaps you should try some spelling variations:
"elite groups" » "line groups", "finite groups", "little groups"
"life groups" » "life group", "line groups", "five groups"
"like groups" » "linkage groups", "little groups", "large groups"
"lie groups" » "live groups", "line groups"

Try widening your search to All Fields.

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: (((("lie groups") OR ((("life groups") OR ("elite groups"))))) OR ("like groups")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"lie groups\") or (((\"life groups\") OR (\"elite groups\"))))) or (\"like groups\"))".
• Removing quotes may allow a broader search: (((( lie groups ) or ((( life groups ) OR ( elite groups ))))) or ( like groups )).
• Adding a wildcard symbol may retrieve word variants: (((("lie groups") or ((("life groups") OR ("elite groups"))))) or ("like groups"))*.