Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement en » developpement et, developpement des, developpement de
l developpement » le developpement, de developpement, et developpement
rheologie does » rheologie des, theologie des, theologie der
does variation » de variation, der variation, die variation
variation 6 » variation _, variations _, variation des
4 personal » a personal, 1 personal, 1945 personal
a l » a la

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

• Adding a wildcard symbol may retrieve word variants: rheologie does variation 6 4 personal communication a l developpement en afrique.*.