Perhaps you should try some spelling variations:
black david » brock david, blanc david, baldock david
david young » david loundy
gene black » den black, gene bank, line black
young ghi » young choi, hong ghi, young get
yan yang » yang yang, yao yang, dan yang
wang » wing, lang
judy » july

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or wan) yan yang judy gene black david young ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wan) yan yang judy gene black david young ghi ;.
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yan yang judy gene black david young ghi ;*.