Perhaps you should try some spelling variations:
2.3.1 communications » 2.3.1.1 communication, 2.3 communication, 3.1 communication
communications costs » communication costs, communications _
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
technology 1 » technology _
prices 2.3.1 » prices 2.3.4, prices 2.3.5, prices 2.3.6
1 inflation » 10 inflation, 12 inflation, _ inflation
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation _ prices 2.3.1 communications costs a developpement de l'afrique.*.