Perhaps you should try some spelling variations:
wong john » wrong john, kong john, longo john
hua wong » hua zhong
zhang ii » zhang i, zhang li, zhang si
bonn ein » bonn mein, kann ein, bonn iii
bonn die » wenn die
yang yi » yang di, yang jui
yang xi » yang di, yang jui
kann » ann

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: zhang ii ((yang yi) OR (yang xi)) hua wong john ((bonn ein) OR (((bonn die) OR (kann die)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang ii ((yang yi) or (yang xi)) hua wong john ((bonn ein) or (((bonn die) OR (kann die)))) ;~".
• Adding a wildcard symbol may retrieve word variants: zhang ii ((yang yi) or (yang xi)) hua wong john ((bonn ein) or (((bonn die) OR (kann die)))) ;*.