Perhaps you should try some spelling variations:
mobil communication » mobile communication, mobile communications, mobile commusnication
ban developpement » au developpement, en developpement, un developpement
developpement de » developpement des, developpement durable
technologies 3 » technologies _, technologies 4, technologies 2
informal 4.2 » informal 8.4, informal 3.4.5, informal _
3 informal » _ informal, vs informal
de afrique » de l'afrique, en afrique, l afrique
der mobil » der mobilen, der moral, der moel
4.2 der » 2.2 der, 3.2 der

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 informal 4.2 der mobil communication _ ban developpement de afrique.*.