Perhaps you should try some spelling variations:
information source » information sources, information resource, information resources
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
do information » 2 information, 1 information, 3 information
technology do » technology does, technology dlt, technology 1
developing en » developing e, developing eq, developing egg
source scope » source score, source scopus, source code
4 developing » 3 developing
scope 3.5 » scope 3.2, scope 3.1, scope 1.5
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: technology do information source scope 3.5 communication costs 4 developing en afrique.*.