Perhaps you should try some spelling variations:
sin dauer » seine dauer, die dauer, i dauer
done sin » dong sin, done using, done so
iii wege » iii where, iii wie, die wege
ii water » i water, 1 water, 2 water
yang jin » yang jie, yang jun, ying jin
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 ((iii wege) OR (ii water)) we fi ((yang jin) OR (((yang di) OR (yang yi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: done sin dauer ((iii wege) or (ii water)) we fi ((yang jin) or (((yang di) or (yang yi)))) ;*.