Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien dis » technologien des, technologien als, technologien im
de communication » mobile communication, online communication
dis information » mis information, aids information, des informations
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
contents head » contents lead, contents map, contents a
developing ii » developing ai, developing ict, developing cil
ii africa » ii afrika, ii america, 1 africa
cost 3.2 » cost 2.4
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 dis information contents head de communication cost 3.2 developing ii africa.*.