Perhaps you should try some spelling variations:
information devices » information services, information service, information advice
communication phase » communication case, communication based, communication paper
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
des developpement » des developpements, de developpement, le developpement
technology 2 » technology _, technology 1, technology 3
devices ring » devices using, devices sharing, device using
des afrique » en afrique, de l'afrique
phase des » phasen des, phase der
ring 2.7 » ring 2.3, ring 12.2, ring 27.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2 information devices ring 2.7 communication phase des developpement des afrique.*.