Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
technologien am » technologien im, technologien als, technologie im
am information » guam information, palm information, crm information
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
centers e » centers _, centers 3, centers a
costs 4.4 » costs 4.2
e 3.1 » _ 3.1, i 3.1, a 3.1

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

• Adding a wildcard symbol may retrieve word variants: technologien am information centers e 3.1 communications costs 4.4 developing _ africa.*.