Perhaps you should try some spelling variations:
clarke david » clarke daniel, parker david, berke david
mark david » mare davide, parker david
young ghi » young choi, hong ghi, young get
lang dan » liang dan, wang dan, lang lang
dan yang » daun yang, tan yang, wang yang
yang i » yang di, yang xi, yang yi
i gene » _ gene, a gene, e 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 dan yang i gene ((clarke david) OR (mark david)) young ghi ;~.
• Adding a wildcard symbol may retrieve word variants: lang dan yang i gene ((clarke david) or (mark david)) young ghi ;*.