Perhaps you should try some spelling variations:
yong yoon » wong yoon, yong khoon
yang yang » wang yang, wang yan
yong yan » dong yang, ying yang, wang yan
yuan tan » huan t'an, yuan kang, yuan ting
tan yong » tan hong, tan kong, tan yang
lin zong » lin ling, lin meng
yi zong » yi rong

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((((yong yan) or (yong yoon))) or (yang yang)) yuan tan yong ((yi zong) or (lin zong)) hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((((yong yan) OR (yong yoon))) OR (yang yang)) yuan tan yong ((yi zong) OR (lin zong)) hai ;.
• Adding a wildcard symbol may retrieve word variants: wang ((((yong yan) or (yong yoon))) or (yang yang)) yuan tan yong ((yi zong) or (lin zong)) hai ;*.