Perhaps you should try some spelling variations:
"brian duncan smith" » "bruce duncan smith", "brian duncan sir", "bra duncan smith", "brjon duncan smith", "brinnes duncan smith"
"ian duncan sarah" » "ian duncan adam", "ian duncan gray", "ian duncan shaw", "a duncan sarah", "jon duncan sarah", "innes duncan sarah"
"ian duncan scott" » "ian duncan scotus", "ian duncan stone", "a duncan scott", "jon duncan scott", "innes duncan scott"

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 ("ian duncan sarah"))) OR ("ian duncan scott")).
• Removing quotes may allow a broader search: (((( brian duncan smith ) or ( ian duncan sarah ))) or ( ian duncan scott )).
• Adding a wildcard symbol may retrieve word variants: (((("brian duncan smith") or ("ian duncan sarah"))) or ("ian duncan scott"))*.