Perhaps you should try some spelling variations:
sin dauer » seine dauer, die dauer, i dauer
where do » where _
yang jin » yang jie, yang jun, ying jin
dauer 4 » dauer 2, dauer _, dauer 1.4
4 where » 2 where
yang yi » yang xi, yang jui
do fi » do fdi
dong » doing, long, done

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 sin dauer 4 where do fi ((yang jin) OR (((yang di) OR (yang yi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: dong sin dauer 4 where do fi ((yang jin) or (((yang di) or (yang yi)))) ;*.