Perhaps you should try some spelling variations:
information centers » information contents, information officers
technologien labor » technology labor, technologies lasers, technologien fur
communication cost » communication costs, communication costa, communications costs
labor information » sector information
de communication » mobile communication, online communication
3.5.3 developing » 2.5.3 developing, 3.5.2 developing, 3.5.4 developing
developing em » developing e, developing eq, developing amp
cost 3.5.3 » cost 3.3.3, costs 2.5.3, cost 2.2.3
em africa » 1 africa

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

• Adding a wildcard symbol may retrieve word variants: technologien labor information centers _ de communication cost 3.5.3 developing em africa.*.