Perhaps you should try some spelling variations:
wang liang » wang yang
wang wang » wang yang, wang yong, wang jing
gene yang » gene bank
yang john » young john, king john, yang jin
john song » john wong, john bonn, john ngosong
song same » non same, song pae, wong sam
yong hua » dong hua, ying hua, wang hua
hua gene » human gene, a gene, hua ren

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