Perhaps you should try some spelling variations:
employee » employed
employees » employeds
employeds » employed, employes, employess
employers » employed
co-operatives » co-operative, co-operativen, co-cooperatives

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