Perhaps you should try some spelling variations:
2.1 transformation » 2.1 transformations, 2.2 transformation, 2.3 transformation
die communication » de communication, time communication, une communication
technologies 2.1 » technologies _, technologies 4, technologies a
transformation a » transformation _
4 developing » 3 developing
den die » denen die, juden die, daten die
costs 4 » costs _, costs a, costs 4.2
a den » _ den, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 transformation a den die communication costs 4 developing _ areas.*.