Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong cai » dong cao, yong c, yong wah
pay gaps » pay gap, pay gain
via gain » via gan, via ai
yang jin » yang jie, yang jun, ying jin
jin kang » jin chang, jin kyung, jing fang
kang han » kang chen, kong hang, zhang han

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 yong cai ((pay gaps) OR (via gain)) yang jin kang han ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong cai ((pay gaps) or (via gain)) yang jin kang han ;*.