Perhaps you should try some spelling variations:
"prichard davidson" » "richard davies", "richard david", "richard dawson"
"prichard wilson" » "richard wilson", "richardus wilson", "richard watson"
"pritchard david" » "richard david", "u'prichard david", "richards david"
"richard davis" » "richard davies", "richard dawkins", "richard daniel"

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: (((((("prichard davidson") OR ("prichard wilson"))) OR ("richard davis"))) OR ("pritchard david")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"prichard davidson\") OR (\"prichard wilson\"))) or (\"richard davis\"))) or (\"pritchard david\"))".
• Removing quotes may allow a broader search: (((((( prichard davidson ) OR ( prichard wilson ))) or ( richard davis ))) or ( pritchard david )).
• Adding a wildcard symbol may retrieve word variants: (((((("prichard davidson") OR ("prichard wilson"))) or ("richard davis"))) or ("pritchard david"))*.