Perhaps you should try some spelling variations:
"gerald martha smith" » "gerald mars smith", "gerard martin smith", "world martha smith", "gerald martha judith", "gerald martha sarah"
"gerald carter smith" » "gerard career smith", "gerald mcmaster smith", "bernard carter smith", "gerald walter smith", "gerald carter keith", "gerald carel smith"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"gerald martha smith\") OR (\"gerald carter smith\"))".
• Removing quotes may allow a broader search: (( gerald martha smith ) OR ( gerald carter smith )).
• Adding a wildcard symbol may retrieve word variants: (("gerald martha smith") OR ("gerald carter smith"))*.