Perhaps you should try some spelling variations:
sein dann » sein kann, bin dann, ein dank
yulu chen » yu chen
chen ping » chen rong, chen yang, chen wang
sein das » sein des, sein de, sein du
ping jia » jing jia, jing ji, ying jin
yang yue » wang yue, yang jui, yang yi
yang yun » yang jun, tang yun, yang yang

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: dong ((sein dann) OR (sein das)) yulu chen ping jia ((yang yue) OR (yang yun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((sein dann) OR (sein das)) yulu chen ping jia ((yang yue) or (yang yun)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong ((sein dann) OR (sein das)) yulu chen ping jia ((yang yue) or (yang yun)) ;*.