Perhaps you should try some spelling variations:
oral communication » personal communication
developpement du » developpement de, developpement des, developpement et
3 developpement » de developpement, le developpement, et developpement
technologies 4 » technologies _
4 transition » 2 transition, de transition, en transition
du africa » de africa, eu africa, 1 africa
media 3 » media _, media 1, media 4
a der » _ der, 2 der, 1 der
3 der » _ der, 2 der

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 4 transition ((a der) OR (3 der)) oral communication media 3 developpement du africa.~".
• Adding a wildcard symbol may retrieve word variants: technologies 4 transition ((a der) OR (3 der)) oral communication media 3 developpement du africa.*.