Perhaps you should try some spelling variations:
brian duncan » ian duncan, bruce duncan
duncan smith » duncan sarah
duncan scott » duncan scotus, duncan stone
john duncan » john dunton, john dunning
jon duncan » j duncan, ian duncan, colin 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: (((( brian duncan smith ) OR ( brian duncan scott ))) OR ((( jon duncan sir ) OR ( john duncan smith )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( brian duncan smith ) OR ( brian duncan scott ))) or ((( jon duncan sir ) or ( john duncan smith ))))".
• Adding a wildcard symbol may retrieve word variants: (((( brian duncan smith ) OR ( brian duncan scott ))) or ((( jon duncan sir ) or ( john duncan smith ))))*.