Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
cuba communications » rural communications, china communications, libya communications
technologien des » technologien fur, technologien und, technologies 2
informal context » formal context, informed context, formal contexts
23.4 developing » 13.4 developing, 2.4 developing, 3.4 developing
des informal » des informalen, vs informal, do informal
developing 1 » developing _, developing a, developing e
context how » content how, context has, context he
costs 23.4 » costs 2.4, costs 4.4, costs 2.3
how cuba » how clubs

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

• Adding a wildcard symbol may retrieve word variants: technologien des informal context how cuba communications costs 23.4 developing 1 africa.*.