Perhaps you should try some spelling variations:
"knight's course of the iron cross with oak leaves" » "knight's tour of the iron cross with oak leaves", "knight's course of the proton cross with oak leaves", "knight's course of the neuron cross with oak leaves", "knight's course of the iron cross with oat leaves", "knight's course of the iron cross with bark leaves", "knight's course of the iron cross with book leaves"
"knight's case of the iron cross with oak leaves" » "knight's case of the proton cross with oak leaves", "knight's case of the neuron cross with oak leaves", "knight's case of the iron cross with oat leaves", "knight's case of the iron cross with bark leaves", "knight's case of the iron cross with book leaves"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"knight's case of the iron cross with oak leaves\") OR (\"knight's course of the iron cross with oak leaves\"))".
• Removing quotes may allow a broader search: (( knight's case of the iron cross with oak leaves ) OR ( knight's course of the iron cross with oak leaves )).
• Adding a wildcard symbol may retrieve word variants: (("knight's case of the iron cross with oak leaves") OR ("knight's course of the iron cross with oak leaves"))*.