Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information source » information sources, information resource, information resources
technologie die » technologie de, technologie im, technologie der
die information » time information, life information, age information
4 developing » 3 developing
developing a » developing _
de personal » der personal, des personal, de persona
source de » source des, source du, source code
a africa » 1 africa, can africa, em africa
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologie die information source de personal communication costs 4 developing a africa.*.