Perhaps you should try some spelling variations:
3 communication » 4 communication, de communication, data communication
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
des afrique » en afrique, de l'afrique
policy de » policy del, policy does, policy dale
6 der » _ der, 2 der, 3 der
der 3 » der _, der e, des 3

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "policy de variation 6 der 3 communication ((2 does) OR (4 does)) developpement des afrique.~".
• Adding a wildcard symbol may retrieve word variants: policy de variation 6 der 3 communication ((2 does) OR (4 does)) developpement des afrique.*.