Perhaps you should try some spelling variations:
kong john » king john, wong john, longo john
zhang yan » zhang fan, zhang jian, wang yan
tran hua » tan hua, tran duc
tuan hua » tan hua, tuan vu, yuan hui
ren kong » tan kong, nan kong, ren weng
bonn zum » bonn zur
bonn am » bonn a, bonn ana, bonn auf

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhang yan ((tran hua) or (tuan hua)) ren kong john ((bonn am) OR (bonn zum)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yan ((tran hua) OR (tuan hua)) ren kong john ((bonn am) OR (bonn zum)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang yan ((tran hua) or (tuan hua)) ren kong john ((bonn am) OR (bonn zum)) ;*".