Perhaps you should try some spelling variations:
information better » information letter, information center, information matter
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
3 communication » 4 communication, de communication, data communication
6.4 developing » 5.4 developing, 3.3 developing, 2.2 developing
developing em » developing e, developing eq, developing amp
better world » after world
costs 6.4 » costs 4.4, costs 4.2, costs 2.3
em africa » 1 africa
world 3 » world _, world a, world 1

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information better world 3 communication costs 6.4 developing em africa.*.