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

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