Perhaps you should try some spelling variations:
changed time » changed times, change time, chance time
when changed » when change, been changed, we changed
time when » time what
lang yan » wang yan, wang yang, zhang yan
yang jie » yang jin, yang yi, yang jun
yang jui » yang judy, yang yi
yang xi » yang yi
when y » when ya, when _, when a

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan ((((((yang jie) or (yang xi))) or (yang jui))) or (yang di)) when changed time when y ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan ((((((yang jie) OR (yang xi))) OR (yang jui))) OR (yang di)) when changed time when y ;*.