Perhaps you should try some spelling variations:
information centers » information contents, information officers
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
el communication » cell communication, real communication, 3 communication
1.4 developing » 12.4 developing, 1.3 developing, 14 developing
developing em » developing e, developing eq, developing amp
centers 3.2 » centers 2.2, centers 3.3, centers 3.8
costs 1.4 » costs 11.4, costs 12.4, costs 4.4
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 aids information centers 3.2 el communication costs 1.4 developing em africa.*.