Perhaps you should try some spelling variations:
clarke david » clarke daniel, parker david, berke david
mark david » mare davide, parker david
lang tan » liang tan, lang lang, tang tang
tan yang » dan yang, tan ying, tan yong
hong ghi » zhong zhi, hong g, hong hai
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 tan yang i gene ((clarke david) OR (mark david)) hong ghi ;~.
• Adding a wildcard symbol may retrieve word variants: lang tan yang i gene ((clarke david) or (mark david)) hong ghi ;*.