Perhaps you should try some spelling variations:
when chance » when change, when science
chance eine » chance ein, chancen einer, chancen eines
cheng chu » cheng lu
lang yan » wang yan, wang yang, zhang yan
pang jun » yang jui
ying jin » yang jin, jing ji, yang jie
yang yi » yang xi, yang jui

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: lang yan ((((((pang jun) OR (ying jin))) OR (yang yi))) OR (yang di)) when chance eine cheng chu ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan ((((((pang jun) or (ying jin))) or (yang yi))) or (yang di)) when chance eine cheng chu ;*.