Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
communication 4 » communication _, communication a, communication 3
do's variation » does variation, modes variation, de variation
de development » e development, ce development, de developpement
variation 6 » variation _, variations _, variation des
1 afrique » l afrique, en afrique, 1 enrique
den de » den die, den drei, orden de
6 den » _ den, 6 der, 6 de
4 de » 4 die, 4 der, 4 des

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (apology OR typology) do's variation 6 den de communication 4 de development 1 afrique.~.
• Adding a wildcard symbol may retrieve word variants: (apology or typology) do's variation 6 den de communication 4 de development 1 afrique.*.