Perhaps you should try some spelling variations:
does developpement » de developpement, des developpements, does development
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
communication 2 » communication _, communication a, communication 3
der variation » does variation, die variation, zur variation
de variation » die variation, does variation, de validation
2 does » 4 does
6 dr » 6 der, 16 dr, _ dr
dr 3 » ddr 3, der 3, drl 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: "apology ((de variation) OR (der variation)) 6 dr 3 communication 2 does developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology ((de variation) OR (der variation)) 6 dr 3 communication 2 does developpement en afrique.*.