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
goes personal » roles personal, des personal, names personal
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
using goes » using games, using goals, using gross
a net » a new, _ net, a neo

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation using goes personal communication a net developpement durable afrique.*.