Perhaps you should try some spelling variations:
oral communication » personal communication
developpement l » developpement il, developpement la, developpement de
theologie 15 » theologie 1, theologie 5, theologie 1.2
15 variation » 1 variation, 5 variation, 1.1 variation
variation 6 » variation _, variations _, variation des
l afrique » en afrique
its oral » its oil, u.s oral, vs oral
6 its » 6 it's, _ its, 2 its
a bau » a bad, a bab, a ban
a au » a auf, a aus, a a

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theologie 15 variation 6 its oral communication ((a au) OR (a bau)) developpement l afrique.~.
• Adding a wildcard symbol may retrieve word variants: theologie 15 variation 6 its oral communication ((a au) or (a bau)) developpement l afrique.*.