Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
2.3 communications » 2.3 communication, 4.3 communication, 1.3 communication
developpement de » developpement des, developpement durable
technology low » technology flow, technology law, technology led
low inflation » core inflation, _ inflation
rate space » state space, trace space, safe space
de afrique » de l'afrique, en afrique, l afrique
space 2.3 » space 2.1, space 2.2, space 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology low inflation rate space 2.3 communications costs _ developpement de afrique.*.