Perhaps you should try some spelling variations:
"rivers david, warwickshire" » "rogers david, warwickshire", "powers david, warwickshire"
"river davon, warwickshire" » "river avon, warwickshire", "keiner davon, warwickshire", "river darwen, warwickshire"
"rivers avon, warwickshire" » "river avon, warwickshire", "rivers basin, warwickshire"
"myers david, warwickshire" » "powers david, warwickshire", "rogers david, warwickshire"

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: (((("river davon, warwickshire") OR ("rivers avon, warwickshire"))) OR ((("rivers david, warwickshire") OR ("myers david, warwickshire")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"river davon, warwickshire\") OR (\"rivers avon, warwickshire\"))) or (((\"rivers david, warwickshire\") or (\"myers david, warwickshire\"))))".
• Removing quotes may allow a broader search: (((( river davon, warwickshire ) OR ( rivers avon, warwickshire ))) or ((( rivers david, warwickshire ) or ( myers david, warwickshire )))).
• Adding a wildcard symbol may retrieve word variants: (((("river davon, warwickshire") OR ("rivers avon, warwickshire"))) or ((("rivers david, warwickshire") or ("myers david, warwickshire"))))*.