Perhaps you should try some spelling variations:
personal communication » interpersonal communication
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
des variation » does variation, de variation, der variation
haus personal » das personal, names personal, loans personal
a et » a set, a net, a bet

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(typologie OR typology) des variation _ haus personal communication a et developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: (typologie OR typology) des variation _ haus personal communication a et developpement en afrique.*.