Perhaps you should try some spelling variations:
wang yong » wang hyoung, wang yan, wang shiyong
wang yang » wang yan, wang liang, wang yanling
ying john » king john, young john, ying jin
john song » john wong, john bonn, john ngosong
hua gene » human gene, hua ren, hy5 gene
song sau » wong sau, kong sar, song pae
a gene » a genre, a gender, a gentle

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: wan ((wang yong) OR (wang yang)) ((hua gene) OR (a gene)) ying john song sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ((wang yong) or (wang yang)) ((hua gene) OR (a gene)) ying john song sau ;~".
• Adding a wildcard symbol may retrieve word variants: wan ((wang yong) or (wang yang)) ((hua gene) OR (a gene)) ying john song sau ;*.