Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement du » developpement de, developpement des, developpement et
rheologie does » rheologie des, theologie des, theologie der
does variation » de variation, der variation, die variation
variation 4 » variations 4, variation _, variation 6
2 personal » 1 personal, 4 personal
du afrique » en afrique, l afrique, de l'afrique

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: "rheologie does variation 4 2 personal communication ((a l) OR (a la)) developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: rheologie does variation 4 2 personal communication ((a l) OR (a la)) developpement du afrique.*.