Perhaps you should try some spelling variations:
personal communication » interpersonal communication
series information » business information
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
information und » informations und
1 personal » a personal, 4 personal, 1945 personal
und 1 » und 19, und 13, und 18

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

• Adding a wildcard symbol may retrieve word variants: technology series information und 1 personal communication a leur developpement en afrique.*.