Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
der communication » de communication, under communication, debt communication
information case » information based, information can, information costs
technologies 2 » technologies _, technologies 4
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
case das » case des, case case, case data
cost 3.2 » cost 2.4
das der » dass der, das dorf, das drei

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information case das der communication cost 3.2 developing _ areas.*.