Perhaps you should try some spelling variations:
model communication » modern communication, moral communication, modeling communication
communication cost » communication costs, communication costa, communications costs
rural development » social development
development case » development china
relative der » relative de, relative order, relativer oder
der process » der prozess, der proceso, deal process
case labor » care labor, based labor, male labor

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology _ relative der process model communication cost rural development case labor.*.