Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.2 communications » 3.2 communication, 3.1 communications, 4.2 communications
developpement de » developpement des, developpement durable
technology hard » technology has, technology have, technology hydro
inflation rates » inflation rate
4 developpement » de developpement, le developpement, et developpement
hard inflation » aid inflation, has inflation, hybrid inflation
de afrique » de l'afrique, en afrique, l afrique
space 3.2 » space 2.1
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 hard inflation rates space 3.2 communications costs 4 developpement de afrique.*.