Perhaps you should try some spelling variations:
bank david » black david, bank ravi, park david
mark david » mare davide, parker david
liang tan » liang dan, wing tan
liang sun » liang dan, wing sun
young ghi » young choi, hong ghi, young get
yang li » yang lin, yang di, yang xi
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: ((liang tan) OR (liang sun)) yang li gene ((bank david) OR (mark david)) young ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((liang tan) OR (liang sun)) yang li gene ((bank david) or (mark david)) young ghi ;~".
• Adding a wildcard symbol may retrieve word variants: ((liang tan) OR (liang sun)) yang li gene ((bank david) or (mark david)) young ghi ;*.