Perhaps you should try some spelling variations:
personal communication » interpersonal communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
typologie its » typologie des, typologie et, typologie cices
its variation » its variations, does variation, les variations
dr personal » der personal, de personal, das personal
a der » _ der, 2 der, 3 der

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 der developpement en afrique.*.