Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
information cases » information case, information classes, information costs
aids information » chandos information, series information
de communication » mobile communication, online communication
3.3 developing » 4 developing, 2 developing, 1 developing
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
des de » des 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 cases des de communication cost 3.3 developing _ areas.*.