Perhaps you should try some spelling variations:
communication serien » communication series, communications series, communication services
information 2.3.1 » information 2.3.2, information 5.3.1, information 2.3.3
der developpement » de developpement, des developpements, leur developpement
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
2.3.1 does » 2.3.1 des, 14.3.1 does, 2.3.1 die
serien der » serie de, series de, theorien der
does de » does debt

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 2.3.1 does de communication serien der developpement en afrique.*.