Perhaps you should try some spelling variations:
yang john » young john, king john, yang jin
chen yang » chen rong
bonn saur » bonn auf
wing yan » wang yan, wing tan, wang yang
wing ian » wing tan, twinn ian, wing sun
yang hua » yang hui, ying hua, yang jui
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) OR (wing ian)) ((yang hua) OR (wang hua)) chen yang john ((bonn saur) OR (bonn zur)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing yan) OR (wing ian)) ((yang hua) or (wang hua)) chen yang john ((bonn saur) or (bonn zur)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wing yan) OR (wing ian)) ((yang hua) or (wang hua)) chen yang john ((bonn saur) or (bonn zur)) ;*.