Perhaps you should try some spelling variations:
zwang 4.2.1 » zwang 12.1
wang liang » wang yang
than china » tuan china, han china, wuhan china
4.2.1 long » 1.2.1 long, 4.2.2 long, 4.2.5 long
yang yang » wang yang, wang yan
china der » china des, china den, china under
long du » long d, long do, long run

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 liang) OR (yang yang)) than china der zwang 4.2.1 long du ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang liang) or (yang yang)) than china der zwang 4.2.1 long du ;*.