Perhaps you should try some spelling variations:
developpements en » developpement en, developpement et, developpements de
4 communication » 3 communication, 5.4 communication, de communication
do's variation » does variation, modes variation, de variation
der 4 » der _, der e, der a
2 des » 2 der, a des, 3 des
2 das » 1 das
apology » typology, topology

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 do's variation _ der 4 communication ((2 des) OR (2 das)) developpements en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology do's variation _ der 4 communication ((2 des) OR (2 das)) developpements en afrique.*.