Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
information 2.3.3 » information 4.3.3, information 2.3.2, information 3.3.3
de communication » mobile communication, online communication
du developpement » de developpement, le developpement, et developpement
des afrique » en afrique, de l'afrique
2.3.3 der » 2.3.1 der, 2.3.2 der, 3.3.3 der
case du » case d, case d1, case d2

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 2.3.3 der de communication case du developpement des afrique.*.