Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
technology cases » technology case, technology based, technology costs
zu developpement » du developpement, au developpement, ou developpement
developpement de » developpement des, developpement durable
cases inflation » taxes inflation, wages inflation, core inflation
communication 2 » communication _, communication a, communication 3
rate spaces » state spaces, data spaces, safe spaces
spaces 6.2 » spaces 4.2, spaces 1.1, spaces 2.1
de afrique » de l'afrique, en afrique, l afrique
2 zu » 2 zur, 2 zum

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

• Adding a wildcard symbol may retrieve word variants: technology cases inflation rate spaces 6.2 communication 2 zu developpement de afrique.*.