Perhaps you should try some spelling variations:
11.6 communication » 1.1 communication, 1.3 communication, 1.4 communication
developpement en » developpement et, developpement des, developpement de
isolation class » isolation can, isolation care, isolation haus
4 developpement » de developpement, le developpement, et developpement
class parties » across parties, class barriers, class part
parties 11.6 » parties 10.6, parties 16.6, parties 1.3
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology _ isolation class parties 11.6 communication costs 4 developpement en afrique.*.