Perhaps you should try some spelling variations:
der developpement » de developpement, des developpements, leur developpement
communications 2 » communications _, communications a, communications 5
technologies 4 » technologies _
information 21 » information 2.1, information 2, information 1
4 information » 2 information, 1 information
des afrique » en afrique, de l'afrique
4.1 data » 2.1 data, 3.1 data
21 4.1 » 2011 4.1, 2013 4.1, 2017 4.1
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 21 4.1 data communications 2 der developpement des afrique.*.