Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
1.4 developing » 12.4 developing, 1.3 developing, 14 developing
contents head » contents lead, contents map, contents a
developing ii » developing ai, developing ict, developing cil
ii afrika » _ afrika
cost 1.4 » cost 14.4, cost 2.4, cost 1.2
head de » head age, head did, heads we

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information contents head de communication cost 1.4 developing ii afrika.*.