Perhaps you should try some spelling variations:
"brian duncan smith" » "bruce duncan smith", "brian duncan sarah", "bra duncan smith", "brinnes duncan smith"
"brian duncan scott" » "bruce duncan scott", "brian duncan scotus", "brian duncan stone", "bra duncan scott", "brinnes duncan scott"
"john duncan smith" » "john duncan sarah", "john dunton smith", "john dunning smith"
"ian duncan scott" » "ian duncan scotus", "ian duncan stone", "a duncan scott", "innes duncan scott"
"jon duncan sir" » "j duncan sir", "colin duncan sir", "jon duncan i", "jon 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 ("ian 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 (\"ian duncan scott\"))))) or (((\"jon duncan sir\") or (\"john duncan smith\"))))".
• Removing quotes may allow a broader search: (((( brian duncan smith ) or ((( brian duncan scott ) OR ( ian 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 ("ian duncan scott"))))) or ((("jon duncan sir") or ("john duncan smith"))))*.