Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication layer » communication law, communication united
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
does variation » de variation, der variation, die variation
apologie does » apologie des, l'apologie des, typologie des
ex personal » e personal, der personal, des personal
layer au » layer _, layer 2, layer 5

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

• Adding a wildcard symbol may retrieve word variants: apologie does variation _ ex personal communication layer au developpement de l'afrique.*.