Perhaps you should try some spelling variations:
technologien dis » technologien des, technologien als, technologien im
el communication » cell communication, real communication, 3 communication
dis information » mis information, aids information, des informations
developing em » developing e, developing eq, developing amp
contents 1.3 » contents 1.1, contents 2.3, contexts 1.3
3 developing » 3 development
em africa » 1 africa
costs 3 » costs _, costs 4, costs a
1.3 el » 2.3 el, 3.3 el

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 1.3 el communication costs 3 developing em africa.*.