Perhaps you should try some spelling variations:
sin dauer » seine dauer, die dauer, i dauer
done sin » dong sin, done using, done so
ii where » 2 where, 4 where, 1 where
yang jin » yang jie, yang jun, ying jin
iii war » ii war, iii wer, iii what
yang yi » yang xi, yang jui
we fi » wi fi

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: done sin dauer ((ii where) OR (iii war)) we fi ((yang jin) OR (((yang di) OR (yang yi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: done sin dauer ((ii where) or (iii war)) we fi ((yang jin) or (((yang di) or (yang yi)))) ;*.