Perhaps you should try some spelling variations:
oral communication » personal communication
des developpement » des developpements, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
information 5.2 » information 15.2, information 1.2, information 5.4
communication 3 » communication _, communication a
who oral » who deal
5.2 who » 5.2 what
3 des » 3 der, 3 das, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 5.2 who oral communication 3 des developpement en afrique.*.