Perhaps you should try some spelling variations:
information contracts » information constraints, information contents, information constraint
world communication » work communication, wired communications, good communication
technologien 2 » technologies 2, technologien _, technologien 1
developing em » developing e, developing eq, developing amp
4 developing » 3 developing
contracts 4 » contracts _, contract 4, contracts 5
em africa » 1 africa
4 world » 1 world, 19 world
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien 2 information contracts 4 world communication costs 4 developing em africa.*.