Perhaps you should try some spelling variations:
time communication » de communication, mobile communication, online communication
technologien dis » technologien des, technologien als, technologien im
dis information » mis information, aids information, des informations
4 developing » 3 developing
developing v » developing av, developing _, developing a
v africa » 1 africa, em africa
costs 4 » costs _, costs a, costs 4.2
r buy » _ buy
i buy » _ buy

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 dis information ((r buy) OR (i buy)) time communication costs 4 developing v africa.~".
• Adding a wildcard symbol may retrieve word variants: technologien dis information ((r buy) OR (i buy)) time communication costs 4 developing v africa.*.