Perhaps you should try some spelling variations:
chen jean » chen jian, chen tan
chen john » chown john, chen jian, rechnen john
bonn siew » wong siew, bonn kiel
keong shu » cong shu, jeong su
bonn die » kann die, wenn die
wang » wing, wan, lang
hyoung » young, hyong, kyoung

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 hyoung jane ((chen jean) OR (chen john)) ((bonn siew) OR (bonn die)) keong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang hyoung jane ((chen jean) or (chen john)) ((bonn siew) or (bonn die)) keong shu ;*.