Perhaps you should try some spelling variations:
information ladder » information letter, information der, information labor
dual developpement » du developpement, dual development, de developpement
communication 2.3 » communication 23.3, communication 3.3, communication 2.4
3 communication » 4 communication, de communication, data communication
developpement l » developpement il, developpement la, developpement de
ladder de » lander der, ladder _, ladder 4
l afrique » en afrique
2.3 dual » 2.1 dual, 2.2 dual, 2.6 dual
de 3 » des 3, der 3, de 35

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information ladder de 3 communication 2.3 dual developpement l afrique.*.