Perhaps you should try some spelling variations:
"brjon duncan sarah" » "brian duncan sarah", "jon duncan sarah", "ron duncan sarah", "brjon duncan adam", "brjon duncan gray", "brjon duncan shaw"
"brown duncan sarah" » "brown duncan adam", "brown duncan gray", "brown duncan shaw", "brown dunstan sarah", "brian duncan sarah", "john duncan sarah"
"ian duncan sir" » "brian duncan sir", "a duncan sir", "jon duncan sir", "ian duncan i"

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 sir") OR ((("brjon duncan sarah") OR ("brown duncan sarah"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ian duncan sir\") or (((\"brjon duncan sarah\") OR (\"brown duncan sarah\"))))*".
• Removing quotes may allow a broader search: (( ian duncan sir ) or ((( brjon duncan sarah ) OR ( brown duncan sarah ))))*.