Perhaps you should try some spelling variations:
"samuel charles when" » "samuel chandler when", "samuel clarke when", "samuel charles wye", "samuel charles w.e", "samuel charts when"
"samuel harris ben" » "samuel hartlib ben", "samuel hayes ben", "samuel warren ben", "samuel harris gent", "samuel harris bede", "samuel harris dean"

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: (("samuel charles when") OR ("samuel harris ben")).
• Removing quotes may allow a broader search: (( samuel charles when ) or ( samuel harris ben )).
• Adding a wildcard symbol may retrieve word variants: (("samuel charles when") or ("samuel harris ben"))*.