Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
cell communication » cell communications, oral communication, verbal communication
technologies iot » technologies ict, technologies icts, technologies art
developpement en » developpement et, developpement des, developpement de
iot information » ist information, cost information, plot information
information 1.2 » information 1.5.2, information 2
des cell » does cell, es cell, dry cell
1.2 des » 1.2 das, 1.2 der, 2.2 des

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

• Adding a wildcard symbol may retrieve word variants: technologies iot information 1.2 des cell communication media leur developpement en afrique.*.