Perhaps you should try some spelling variations:
yan among » yan cong
yang jie » yang jin, yang di, yang jun
yang jui » yang judy, yang di
nan yan » nan ya, wang yan, qian yan
among i » among di, among im, among ip
yang yi » yang di
yang xi » yang di
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: nan yan among i gene ((((yang jie) OR (yang yi))) OR (((yang jui) OR (yang xi)))) cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: nan yan among i gene ((((yang jie) or (yang yi))) or (((yang jui) or (yang xi)))) cong shu ;*.