Perhaps you should try some spelling variations:
information sources » information resources, information services, information security
5.4 communication » de communication, data communication
developpement en » developpement et, developpement des, developpement de
ist information » iot information, first information, cost information
4 developpement » de developpement, le developpement, et developpement
technology ist » technology iset, technology isst, technology ict
sources de » sources _, sources 4, sources 5
costs 4 » costs _, costs a, costs 4.2
de 5.4 » mode 5.4

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

• Adding a wildcard symbol may retrieve word variants: technology ist information sources de 5.4 communication costs 4 developpement en afrique.*.