Perhaps you should try some spelling variations:
2.3.5 communications » 2.3 communication, 3.5 communication, 2.5 communication
communications costs » communication costs, communications _
developpement de » developpement des, developpement durable
technology 5.33 » technology 5.3, technology 5.3.1, technology 2.3
4 developpement » de developpement, le developpement, et developpement
5.33 inflation » 3.3.3 inflation, 5.4.3 inflation, 2.3 inflation
prices 2.3.5 » prices 2.3.1, prices 2.3.4, prices 2.3.6
de afrique » de l'afrique, en afrique, l afrique
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 5.33 inflation _ prices 2.3.5 communications costs 4 developpement de afrique.*.