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

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