Perhaps you should try some spelling variations:
"large groups" » "large group", "target groups", "age groups"
"life groups" » "like groups", "life group", "elite groups"
"line groups" » "like groups", "line group", "link groups"
"lie 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: (((("life groups") OR ("line groups"))) OR ((("large groups") OR ("lie groups")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"life groups\") OR (\"line groups\"))) or (((\"large groups\") or (\"lie groups\"))))".
• Removing quotes may allow a broader search: (((( life groups ) OR ( line groups ))) or ((( large groups ) or ( lie groups )))).
• Adding a wildcard symbol may retrieve word variants: (((("life groups") OR ("line groups"))) or ((("large groups") or ("lie groups"))))*.