Perhaps you should try some spelling variations:
cockson edward » cocker edward, johnson edward, copleston edward
lawson edward » rawson edward, alanson edward, manson edward
larson edward » parson edward, clarkson edward, pearson edward
john cockson » john jackson, john colson, john dickson
john larson » john carson, john lamson, john marson

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: (( john cockson edward ) OR ((( john lawson edward ) OR ( john larson edward )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( john cockson edward ) or ((( john lawson edward ) OR ( john larson edward ))))".
• Adding a wildcard symbol may retrieve word variants: (( john cockson edward ) or ((( john lawson edward ) OR ( john larson edward ))))*.