Perhaps you should try some spelling variations:
employed » employees
employeds » employeess, employees, employers, employes
co-operative" » co-cooperative", co-operation", co-operating"
co-operativen" » co-cooperativen", co-operationn", co-operatingn", co-operation"

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