Perhaps you should try some spelling variations:
sample communication » example communication, complex communication, people communication
technologies von » technologies co, technologies box, technologies can
developing human » development human, developing a, developing asia
von information » von informationen, can information
4 developing » 3 developing
human africa » roman africa, urban africa, can africa
d sample » a sample, 2 sample, 4 sample
costs 4 » costs _, costs a, costs 4.2
4.2 d » 4.2 de, 4.2 dt, 4.2 _

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

• Adding a wildcard symbol may retrieve word variants: technologies von information 4.2 d sample communication costs 4 developing human africa.*.