Perhaps you should try some spelling variations:
communications cost » communications costs, communications cross, communication costs
information centers » information contents, information officers
a communications » a communication, data communications, a communicative
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
centers 11.3.3 » centers 11.3.2, centers 11.5.1, century 11.3.3
7.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
developing iv » developing av, developing ict, developing cil
iv africa » v africa, 1 africa, em africa
11.3.3 a » 11.3.3 _, 11.3.1 a, 11.5.3 a
cost 7.4 » costs 7.4, cost 2.4, cost 3.4

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information centers 11.3.3 a communications cost 7.4 developing iv africa.*.