Perhaps you should try some spelling variations:
information centers » information contents, information officers
30 communication » 3 communication, 10 communication, 36 communication
technologien 2 » technologies 2, technologien _, technologien 1
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
centers first » context first
developing e » developing _, developing a, developing east
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
first 30 » first _, first 4, first a
e africa » em africa, de africa, eu africa

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

• Adding a wildcard symbol may retrieve word variants: technologien 2 information centers first 30 communication costs 4.1 developing e africa.*.