Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
information oder » information der, information model, information code
de developpement » sme development
developpement de » developpement des, developpement durable
de afrique » de l'afrique, en afrique, l afrique
costs de » costs _, costs 4, costs a
die 6.2 » die 6.3, date 6.2, done 6.2

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information oder die 6.2 communication costs de developpement de afrique.*.