Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologien fair » technologien fur, technologies fail, technologien als
fair information » fairs information, fur information, labor information
de communication » mobile communication, online communication
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
developing can » developing a, developing ai, developing av
centers 3.3 » centers 3.8, centers 4.3, century 3.3
can africa » urban africa
cost 1.3 » cost 11.3, cost 1.2, cost 2.3
3.3 de » 3.3 die, 3.3 der, 3.3 dem

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

• Adding a wildcard symbol may retrieve word variants: technologien fair information centers 3.3 de communication cost 1.3 developing can africa.*.