Perhaps you should try some spelling variations:
samuel harris » samuel charles, samuel hartlib, samuel hayes
harris cohen » morris cohen, harris when, harris corner
charles chew » charles chaz, charles chui, charles michel
charles chi » charles chui, charles chais, charles coin
clarke chew » clarke ch, clarke cheryl, clarke chris

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 harris cohen ) OR ((( samuel ((charles chew) OR (charles chi)) ) OR ( samuel clarke chew )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( samuel harris cohen ) or ((( samuel ((charles chew) OR (charles chi)) ) or ( samuel clarke chew ))))".
• Adding a wildcard symbol may retrieve word variants: (( samuel harris cohen ) or ((( samuel ((charles chew) OR (charles chi)) ) or ( samuel clarke chew ))))*.