Perhaps you should try some spelling variations:
employee » employed
employees » employeds
co-operatives » co-cooperatives, co-imperatives, co-operations, co-operatings
co-operativen » co-operation, co-cooperativen, co-operationn, co-operatingn
co-operative » co-cooperative, co-operation, co-operating

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-operatives OR (co-operativen OR co-operative ))) OR ( (employee OR employees)-ownership & co-operations )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (employee or employees)-ownership & (co-operatives or (co-operativen OR co-operative ))) or ( (employee or employees)-ownership & co-operations ))".
• Adding a wildcard symbol may retrieve word variants: (( (employee or employees)-ownership & (co-operatives or (co-operativen OR co-operative ))) or ( (employee or employees)-ownership & co-operations ))*.