Perhaps you should try some spelling variations:
black david » brock david, blanc david, baldock david
bank david » mark david, bank ravi, park david
yang zili » yang dali, yang li
zili gene » iii gene
young cho » young choi, young hr
wang dan » wang yan, wang ban, wang yidan
dan yang » daun yang, tan yang, wang yang

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: "wang dan yang zili gene ((bank david) OR (black david)) young cho ;~".
• Adding a wildcard symbol may retrieve word variants: wang dan yang zili gene ((bank david) OR (black david)) young cho ;*.