Perhaps you should try some spelling variations:
wang liang » wang yang
liang yong » liang ying, wang yong, liang liying
gene yang » gene bank
non sales » bond sales, loan sales, non same
yong hua » dong hua, ying hua, wang hua
hua gene » human gene, a gene, hua ren
yang jun » yang jui, pang jun, yang jin

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang liang yong hua gene yang jun ((non sales) or (nation state)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang yong hua gene yang jun ((non sales) OR (nation state)) ;.
• Adding a wildcard symbol may retrieve word variants: wang liang yong hua gene yang jun ((non sales) or (nation state)) ;*.