Perhaps you should try some spelling variations:
"brian duncan smith" » "ian duncan smith", "bruce duncan smith", "brian duncan sarah", "brian duncan scott"
"john duncan smith" » "john duncan sarah", "john duncan scott", "john dunton smith", "john dunning smith"
"jon duncan sir" » "j duncan sir", "ian 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 ((("jon duncan sir") OR ("john duncan smith")))).
• Removing quotes may allow a broader search: (( brian duncan smith ) or ((( jon duncan sir ) or ( john duncan smith )))).
• Adding a wildcard symbol may retrieve word variants: (("brian duncan smith") or ((("jon duncan sir") or ("john duncan smith"))))*.