Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement durable » developpement de
net developpement » et developpement, de developpement, le developpement
variation using » variations during, variation und, variation among
des variation » does variation, de variation, der variation
gams personal » names personal, das personal, haus personal
using gams » using games, using game, using gas
a net » a new, _ net, a neo
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 using gams personal communication a net developpement durable afrique.*.