Perhaps you should try some spelling variations:
face communication » voice communication, de communication, time communication
technologien from » technologies from, technology from, technologien fur
formal contexts » formal context, formal contracts, local contexts
20 developing » 2 developing, 10 developing, 24 developing
from formal » from informal
contexts he » context he, contexts new, contexts _
costs 20 » costs 60, costs 2.3, costs 2.1
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 contexts he face communication costs 20 developing _ africa.*.