Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information case » information based, information can, information costs
de communication » mobile communication, online communication
technologies 4 » technologies _
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
4 information » 2 information, 1 information
developing a » developing _
case das » case des, case case, case data
cost 2.3 » costs 2.3, cost 2.4, cost 2.2
a areas » 1 areas, 2 areas, 4 areas
das de » das der, das dem, das den

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information case das de communication cost 2.3 developing a areas.*.