Perhaps you should try some spelling variations:
oper communication » open communication, proper communication, power communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
mea variation » de variation, der variation, a variation
variation 6 » variation _, variations _, variation des
der oper » der opfer, der oder
6 der » _ der, 2 der, 3 der

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 topology) mea variation 6 der oper communication _ de developpement en afrique.~.
• Adding a wildcard symbol may retrieve word variants: (apology or topology) mea variation 6 der oper communication _ de developpement en afrique.*.