Perhaps you should try some spelling variations:
black david » brock david, blanc david, baldock david
bank david » mark david, bank ravi, park david
young ghi » young choi, hong ghi, young get
lang tan » liang tan, lang lang, tang tang
wang lin » wang li, wang qin, wang limin
yang lin » yang jin, yang li, yang liang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: lang tan ((wang lin) OR (yang lin)) gene ((bank david) OR (black david)) young ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang tan ((wang lin) OR (yang lin)) gene ((bank david) or (black david)) young ghi ;~".
• Adding a wildcard symbol may retrieve word variants: lang tan ((wang lin) OR (yang lin)) gene ((bank david) or (black david)) young ghi ;*.