Perhaps you should try some spelling variations:
black david » brock david, blanc david, baldock david
gene black » den black, gene bank, line black
young ghi » young choi, young get, young hr
yan yang » yang yang, yao yang, dan yang
hong ghi » zhong zhi, hong g, hong hai
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) OR (hong 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) OR (hong ghi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) yan yang judy gene black david ((young ghi) OR (hong ghi)) ;".
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yan yang judy gene black david ((young ghi) OR (hong ghi)) ;*.