Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
olig communications » kong communications, bolivia communications, public communications
developpement de » developpement des, developpement durable
2.2 information » 4.2 information, 2.2.3 information, 2.2 transformation
4 developpement » de developpement, le developpement, et developpement
technology 2.2 » technology _, technology 1, technology 3
information 2 » information 3
der olig » der old
costs 4 » costs _, costs a, costs 4.2
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 information 2 der olig communications costs 4 developpement de l'afrique.*.