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

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