Perhaps you should try some spelling variations:
wang liang » wang yang
human gene » human genome, human gender, human bone
dong yang » dong hoang, wang yang, yang yang
jie jeong » jie song, lee jeong, min jeong
jeong seo » jeong yeon, hong seo, jeong su
yang jie » yang jin, yang di, yang jui
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: ((dong yang) OR (wang liang)) ya ((a gene) OR (human gene)) yang jie jeong seo ;~.
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (wang liang)) ya ((a gene) or (human gene)) yang jie jeong seo ;*.