Perhaps you should try some spelling variations:
information source » information sources, information resource, information resources
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
3 information » 1 information
technology 3 » technology _, technology 1, technology 4
source role » sources role, source code, resources role
la afrique » l afrique, la fabrique, en afrique
role 1.1 » role 1.2, role 10.7, role 13.5
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 3 information source role 1.1 communication costs 4 developpement la afrique.*.