Perhaps you should try some spelling variations:
duncan smith » duncan sarah, duncan sir
duncan scott » duncan scotus, duncan stone
john duncan » john dunton, john dunning
jon duncan » j duncan, ian duncan, colin duncan

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: (( jon duncan smith ) OR ((( jon duncan scott ) OR ( john duncan scott )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( jon duncan smith ) or ((( jon duncan scott ) OR ( john duncan scott ))))".
• Adding a wildcard symbol may retrieve word variants: (( jon duncan smith ) or ((( jon duncan scott ) OR ( john duncan scott ))))*.