Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
dem communication » de communication, debt communication, team communication
aids information » chandos information, series information
information case » information based, information can, information costs
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
case des » cases des, case das, phase des
des dem » das dem, des der, des des

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information case des dem communication cost 2.4 developing _ areas.*.