Perhaps you should try some spelling variations:
"little groups" » "little group", "simple groups", "pile groups"
"live groups" » "lie groups", "five groups", "life groups"
"like groups" » "lie groups", "large groups", "crime 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: (("live groups") OR ((("like groups") OR ("little groups"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"live groups\") or (((\"like groups\") OR (\"little groups\"))))*".
• Removing quotes may allow a broader search: (( live groups ) or ((( like groups ) OR ( little groups ))))*.