Perhaps you should try some spelling variations:
park david » parker david, clarke david, market david
bank david » black david, bank ravi
mark david » mare davide, parker david
young ghi » young choi, hong ghi, young get
lang tan » liang tan, lang lang, tang tang
tan yong » tan hong, tan kong, tan yang
yong li » song li, yang li, yong kim
li gene » i gene, l1 gene, iii gene

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 yong li gene ((((bank david) OR (park david))) OR (mark david)) young ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang tan yong li gene ((((bank david) OR (park david))) or (mark david)) young ghi ;~".
• Adding a wildcard symbol may retrieve word variants: lang tan yong li gene ((((bank david) OR (park david))) or (mark david)) young ghi ;*.