Perhaps you should try some spelling variations:
technologien from » technologies from, technology from, technologien fur
formal contexts » formal context, formal contracts, local contexts
1.4 developing » 12.4 developing, 1.3 developing, 14 developing
developing e » developing _, developing a, developing east
from formal » from informal
costs 1.4 » costs 11.4, costs 12.4, costs 4.4
e africa » em africa, de africa, eu africa
a net » a new, _ net, a neo
a et » a set, a bet, a jet

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologien from formal contexts ((a et) OR (a net)) communication costs 1.4 developing e africa.~".
• Adding a wildcard symbol may retrieve word variants: technologien from formal contexts ((a et) OR (a net)) communication costs 1.4 developing e africa.*.