Perhaps you should try some spelling variations:
data communication » data communications
technology users » technology use, technology series, technology transfers
4 developpement » de developpement, le developpement, et developpement
users section » use section, users fiction, causes section
section case » sectional case, section based, sector case
case change » cause changes, based change, phase change
change data » change damage
des afrique » en afrique, de l'afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology users section case change data communication costs 4 developpement des afrique.*.