Perhaps you should try some spelling variations:
yang john » young john, king john, yang jin
bonn saur » bonn auf
wing yan » wang yan, wing ian, wing tan
yang hua » wang hua, yang hui, yang jui
ying hua » ming hua, wang hua, ying zhu
ren yang » ren yan, chen yang, dan yang
bonn zur » bonn der

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: wing yan ((yang hua) OR (ying hua)) ren yang john ((bonn saur) OR (bonn zur)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((yang hua) or (ying hua)) ren yang john ((bonn saur) OR (bonn zur)) ;~".
• Adding a wildcard symbol may retrieve word variants: wing yan ((yang hua) or (ying hua)) ren yang john ((bonn saur) OR (bonn zur)) ;*.