Perhaps you should try some spelling variations:
dawson edward » lawson edward, rawson edward, manson edward
john rawson » john lawson, john pawson, john newson
john rawdon » john rawlins, john raymond, john railton
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 rawson) OR (john rawdon)) edward ) OR ( john dawson edward )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((john rawson) OR (john rawdon)) edward ) or ( john dawson edward ))".
• Adding a wildcard symbol may retrieve word variants: (( ((john rawson) OR (john rawdon)) edward ) or ( john dawson edward ))*.