Perhaps you should try some spelling variations:
developpement durable » developpement de
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
information when » information what, information war, information wants
4 developpement » de developpement, le developpement, et developpement
3 information » 1 information
technology 3 » technology _, technology 1, technology 4
when can » when a
can 4.1 » scan 4.1, ban 4.1, bean 4.1
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 when can 4.1 communication costs 4 developpement durable afrique.*.