Perhaps you should try some spelling variations:
personal communication » interpersonal communication
leur developpement » le developpement, deux developpements, de developpement
typologie its » typologie des, typologie et, typologie cices
its variation » its variations, does variation, les variations
dr personal » der personal, de personal, das personal
des afrique » en afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: typologie its variation _ dr personal communication a leur developpement des afrique.*.