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

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 july gene black david young ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang OR wan) yan yang july gene black david young ghi ;".
• Adding a wildcard symbol may retrieve word variants: (wang OR wan) yan yang july gene black david young ghi ;*.