Perhaps you should try some spelling variations:
china based » china case
wang liang » wang yang
yang yang » wang yang, wang yan
based von » based non, basel von, based min
mehr wong » mehr von
tan yong » tan hong, tan kong, tan yang
wong sam » wong sau, wong lai, kong sar

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: ((yang yang) OR (((tan yong) OR (wang liang)))) taiwan china based von mehr wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (((tan yong) or (wang liang)))) taiwan china based von mehr wong sam ;*.