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
how personal » from personal, a personal, 1 personal
3 developing » 3 development
developing 1 » developing _, developing a, developing e
source how » resource how, source host
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 1 africa.*.