Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yong
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.

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