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
developing em » developing e, developing eq, developing amp
how personal » from personal, a personal, 1 personal
3 developing » 3 development
source how » resource how, source host
em africa » 1 africa
costs 3 » costs _, costs 4, costs a

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 how personal communication costs 3 developing em africa.*.