Perhaps you should try some spelling variations:
"samuel charles cohen" » "samuel chandler cohen", "samuel clarke cohen", "samuel charles coin", "samuel charles chew", "samuel charles cole"
"samuel james cohen" » "samuel jones cohen", "samuel adams cohen", "samuel james chen", "samuel james cohn", "samuel james cowan"

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