Perhaps you should try some spelling variations:
"charities, voluntary exercises" » "charities, voluntary exercise", "charities, voluntary exertions", "charities, voluntary enterprises"
"charities, military service" » "charities, military science"
"charities, voluntary exiles" » "charities, voluntary exile", "charities, voluntary rules", "charities, voluntary muscles"

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: (("charities, military service") OR ((((((("charities, voluntary services") OR ("charities, voluntary exercises"))) OR ("charities, voluntary exiles"))) OR ("charities, voluntary exiles")))).
• Removing quotes may allow a broader search: (( charities, military service ) or ((((((( charities, voluntary services ) or ( charities, voluntary exercises ))) or ( charities, voluntary exiles ))) or ( charities, voluntary exiles )))).
• Adding a wildcard symbol may retrieve word variants: (("charities, military service") or ((((((("charities, voluntary services") or ("charities, voluntary exercises"))) or ("charities, voluntary exiles"))) or ("charities, voluntary exiles"))))*.