Perhaps you should try some spelling variations:
welle communication » cell communication, people communication, called communication
technology special » technology social, technology specialist, technology specialists
special functions » specific functions, social function
2.1 developpement » 2.1 development, 2007 developpement, de developpement
developpement de » developpement des, developpement durable
functions als » functions all, functions a, functions early
vor welle » von welle
costs 2.1 » costs 2.3, costs 4.1, costs 2.2
de africa » does africa, de america, use africa
als vor » adels vor, als volk

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

• Adding a wildcard symbol may retrieve word variants: technology special functions als vor welle communication costs 2.1 developpement de africa.*.