Perhaps you should try some spelling variations:
"planar minkowski" » "scalar minkowski", "banach minkowski", "any minkowski"
"bruno minkowski" » "brunn minkowski", "und minkowski"
"rana minkowski" » "any minkowski", "banach minkowski", "brunn minkowski"

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: (("bruno minkowski") OR ((("rana minkowski") OR ("planar minkowski")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"bruno minkowski\") or (((\"rana minkowski\") OR (\"planar minkowski\"))))".
• Removing quotes may allow a broader search: (( bruno minkowski ) or ((( rana minkowski ) OR ( planar minkowski )))).
• Adding a wildcard symbol may retrieve word variants: (("bruno minkowski") or ((("rana minkowski") OR ("planar minkowski"))))*.