Perhaps you should try some spelling variations:
manson edward » evanson edward, pearson edward, tenison edward
dawson edward » lawson edward, rawson edward, dobson edward
john manson » john mason, john hanson, john gonson
john dawson » john lawson, john davison

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 manson edward ) OR ( john dawson edward )).
• Adding a wildcard symbol may retrieve word variants: (( john manson edward ) or ( john dawson edward ))*.