Perhaps you should try some spelling variations:
oral communication » personal communication
developpement en » developpement et, developpement des, developpement de
technologies ct » technologies co, technologies art, technologies bit
ct information » cost information, get information, iot information
information 3 » information 2
das oral » das orakel, das organ, u.s oral
3 das » 1 das, 2 das

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

• Adding a wildcard symbol may retrieve word variants: technologies ct information 3 das oral communication costs _ developpement en afrique.*.