Perhaps you should try some spelling variations:
data communication » data communications
developpements en » developpement en, developpement et, developpements de
der variation » de variation, does variation, die variation
apology der » apology mea, apologien der, apologie des
variation 6 » variation _, variations _, variation des
under data » und data, user data
6 under » 4 under, 10 under, 13 under
a das » 2 das, 3 das, _ das

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 der variation 6 under data communication ((a das) OR (1 das)) developpements en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology der variation 6 under data communication ((a das) OR (1 das)) developpements en afrique.*.