Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement en » developpement et, developpement des, developpement de
4 developpement » de developpement, le developpement, et developpement
technologies 2 » technologies _, technologies 4
information 1 » information 2, information 3, information 3.2
one personal » some personal, more personal, one person
costs 4 » costs _, costs a, costs 4.2
1 one » _ one, a one, 3 one

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 1 one personal communication costs 4 developpement en afrique.*.