Perhaps you should try some spelling variations:
face communication » voice communication, de communication, time communication
technologien from » technologies from, technology from, technologien fur
formal context » formal contexts, formal concept, formats content
10 developing » 1 developing, 3 developing, 4 developing
from formal » from informal
context he » context has, context how, context 3
costs 10 » costs 1, costs 20, costs 60
he face » we face, head face, when face

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

• Adding a wildcard symbol may retrieve word variants: technologien from formal context he face communication costs 10 developing _ africa.*.