Perhaps you should try some spelling variations:
thanh china » than china, ghana china, han china
van thanh » tran thanh, phan thanh, lam thanh
china wen » chia wen, china won, ching wen
wang van » wang yan, wang ban, wang dan
yang jui » yang judy, yang xi, yang yi
von sach » von fach, von sprach, von sa
wong siu » wong shiu, kong siu, wong sau

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 van thanh china wen ((yang jui) OR (yang di)) ((((von sach) OR (von scham))) OR (wong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang van thanh china wen ((yang jui) or (yang di)) ((((von sach) or (von scham))) or (wong siu)) ;*.