Perhaps you should try some spelling variations:
been changes » been changed, between changes, sweden changes
during long » enduring long, during low, during load
wang yidan » wang yan
wang liang » wang yang
wang khan » wang shawn, wang yuhan, wang yan
khan been » has been, had been
long bi » long did, long tip

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 yidan) OR (wang liang)) wang khan been changes during long bi ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yidan) or (wang liang)) wang khan been changes during long bi ;*.