Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
kang chen » chang chen, jane chen, kang han
ii chang » vii chang, yi chang, ii changes
tan yong » tan hong, tan kong, tan yang
yong jin » yang jin, ying jin, song jin
yun tan » yun jang
hai » hadi, haji, hari

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 ((yang yang) OR (ii chang)) yun tan yong jin ((kang chen) OR (dang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang yang) or (ii chang)) yun tan yong jin ((kang chen) or (dang hai)) ;*.