Perhaps you should try some spelling variations:
oral communication » personal communication
information 2.3.1 » information 2.3.2, information 5.3.1, information 2.3.3
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
technologies do » technologies de, technologies box, technologies daf
do information » 2 information, 1 information, 3 information
de afrique » de l'afrique, en afrique, l afrique
2.3.1 one » 2.3.1 bone, 2.2.1 one, 2.4.1 one
one oral » one moral, one rural, one oil
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies do information 2.3.1 one oral communication costs le developpement de afrique.*.