Perhaps you should try some spelling variations:
ruralen communication » rural communications, rural telecommunication, oral communication
information centre » information centers, information contents
technologie de » technologies de, technologie der, technologie die
de information » die information, de informacion, e information
3.3 developing » 4 developing, 2 developing, 1 developing
des ruralen » der ruralen, des realen, des dualen
centre des » centre de, centrale des, centres de
costs 3.3 » costs 2.3, costs 3.5, costs 4.3

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

• Adding a wildcard symbol may retrieve word variants: technologie de information centre des ruralen communication costs 3.3 developing _ africa.*.