$ knife search "NOT role:base"
1 items found

$ knife search "environment:_default OR NOT role:base"
0 items found

$ knife search "(environment:_default OR NOT role:base)"
0 items found

$ knife search "(environment:_default) OR (NOT role:base)"
0 items found

$ knife search "(environment:_default OR -role:base)"
0 items found

$ knife search "(NOT role:base OR environment:_default)"
ERROR: knife search failed: invalid search query: '(NOT role:base OR environment:_default)'

$ knife search "NOT role:base OR environment:_default"
ERROR: knife search failed: invalid search query: 'NOT role:base OR environment:_default'