Perhaps you should try some spelling variations:
technologien fur » technologien des, technologien und, technologies 2
el communication » cell communication, real communication, 3 communication
fur information » zur information, fair information, your information
11.1 developing » 11.5 developing, 14.1 developing, 1.1.2 developing
contents 5.3 » content 5.3, contents 5.1, contents 2.3
costs 11.1 » costs 11.4, costs 11.7, costs 1.1.3
5.3 el » 2.3 el, 3.3 el, 1.3 el

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

• Adding a wildcard symbol may retrieve word variants: technologien fur information contents 5.3 el communication costs 11.1 developing _ africa.*.