Perhaps you should try some spelling variations:
oral communication » personal communication
leur developpement » le developpement, deux developpements, de developpement
information speed » information sheet, information needed, information needs
developpement de » developpement des, developpement durable
von information » von informationen, can information
technology von » technology vi, technology vt, technology vision
de africa » does africa, de america, use africa

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

• Adding a wildcard symbol may retrieve word variants: technology von information speed _ oral communication a leur developpement de africa.*.