Perhaps you should try some spelling variations:
employee » employed
employees » employeds
co-imperatives" » co-imperative"
co-operative" » co-cooperative", co-operation", co-operating"
co-cooperativen" » co-cocooperativen", co-cooperationn", co-cooperatingn", co-cooperative", co-cooperatives", co-kooperativen"

Try widening your search to All Fields.

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: (("(employee or employees)-ownership & ((co-imperatives" OR co-operative") or co-cooperativen")) OR ("(employee or employees)-ownership & co-operations")).
• Removing quotes may allow a broader search: (( (employee or employees)-ownership & ((co-imperatives or co-operative ) or co-cooperativen )) or ( (employee or employees)-ownership & co-operations )).
• Adding a wildcard symbol may retrieve word variants: (("(employee or employees)-ownership & ((co-imperatives" or co-operative") or co-cooperativen")) or ("(employee or employees)-ownership & co-operations"))*.