Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information center » information centers, information centre, information content
en communication » open communication, lean communication, when communication
technologie und » technologies 2.1
und information » fund information, road information, award information
3.3 developing » 4 developing, 2 developing, 1 developing
developing 11 » developing _, developing a, developing e
center 2.1 » century 2.1, center 1
11 africa » 11 african, 1 africa, 1.1 african
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
2.1 en » 2.1 ein, 2.1 end, 2.1 eu

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

• Adding a wildcard symbol may retrieve word variants: technologie und information center 2.1 en communication cost 3.3 developing 11 africa.*.