Perhaps you should try some spelling variations:
wang dong » wang yong, wang hong, wang yang
dong yang » dong hoang, wang yang, yang yang
yang minh » yang mind, kang minah, anh minh
sang minh » kang minah, anh minh, song min
yang hua » wang hua, yang hui, ying hua
hua gene » human gene, a gene, hua ren
cong » congo, long, hong

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 dong yang hua gene ((yang minh) OR (sang minh)) cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang dong yang hua gene ((yang minh) or (sang minh)) cong shu ;*.