Perhaps you should try some spelling variations:
oral communication » personal communication
communication 1.4 » communication 2.4, communication 3.4, communication 1.1
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
des variation » does variation, de variation, der variation
firms oral » firms rural, firms deal, firms global
1.4 de » 1.4 die, 1.4 der, 4.4 de
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation _ firms oral communication 1.4 de developpement en afrique.*.