Perhaps you should try some spelling variations:
employee » employees, employed
employeds » employees, employed, employers
co-operatives" » co-operative", co-operativen", co-imperatives"
co-cooperatives" » co-cooperative", co-cooperativen", co-coimperatives", co-cooperation", co-cooperating"

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