Perhaps you should try some spelling variations:
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
technology needs » technology new
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
needs isolation » friends isolation, needs innovations, needs evaluation
isolation haus » isolation auf, isolation bus, isolation class
haus child » cause child, his child
de afrique » de l'afrique, en afrique, l afrique
child 3.1 » chile 3.1, child 5.1, child 1.2

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

• Adding a wildcard symbol may retrieve word variants: technology needs isolation haus child 3.1 communication _ au developpement de afrique.*.