Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
information needs » information networks
de developpement » sme development
developpement de » developpement des, developpement durable
communication 1 » communication _, communication a, communication 3
technologies 1 » technologies _, technologies 4, technologies 2
3.3 optical » 3.3 optimal, 3.3 political, 3.3 critical
de afrique » de l'afrique, en afrique, l afrique
needs 3.3 » needs 4.3, needs 2.3, needs 5.3
1 de » 1 die, 1 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information needs 3.3 optical communication 1 de developpement de afrique.*.