Perhaps you should try some spelling variations:
yong yoon » wong yoon, yong khoon
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
yong yan » ying yang, wang yan, kong yam
rein yan » ren yan
jiu long » jiu cong, au long, eu long
long shu » cong shu, tong shui, long du
yan jiu » yang jie, yang jin, pang jiu
a rein » a reine, a reit, a region

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 yan) OR (yong yoon))) OR (dong yang))) OR (yang yang)) a rein yan jiu long shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((((((yong yan) or (yong yoon))) or (dong yang))) or (yang yang)) a rein yan jiu long shu ;*.