Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
technologies from » technology from, technologies co, technologies art
das developpement » des developpements, de developpement, du developpement
1 communication » 10 communication, 3 communication, 4 communication
developpement l » developpement il, developpement la, developpement de
informal 2.3.1 » informal 15.3.3, informal 3.4.5, information 2.3.1
2.3.1 des » 2.3.1 does, 2.3.1 der, 2.3.1 das
l afrique » en afrique
case das » case des, case case, case data
des 1 » des 19, des 18, des 17

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

• Adding a wildcard symbol may retrieve word variants: technologies from informal 2.3.1 des 1 communication case das developpement l afrique.*.