Perhaps you should try some spelling variations:
yan ruckgang » a ruckgang, der ruckgang, und ruckgang
des ansatzes » des datensatzes, des gesetzes
thing ji » thing _, thing 3, thing 17
wan yan » wang yan, nan yan, wai yan
jing ji » ying jin
dong di » dong sin
einsatzes » einsatz

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: wan yan ruckgang ((des ansatzes) OR (des einsatzes)) ((thing ji) OR (jing ji)) dong di ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan ruckgang ((des ansatzes) OR (des einsatzes)) ((thing ji) or (jing ji)) dong di ;~".
• Adding a wildcard symbol may retrieve word variants: wan yan ruckgang ((des ansatzes) OR (des einsatzes)) ((thing ji) or (jing ji)) dong di ;*.