Perhaps you should try some spelling variations:
2.3.1.1 communication » 2.2.5.4 communication, 3.4.1 communication, 6.2.4.1 communication
communication case » communications case, communication based, communication phase
l developpement » le developpement, de developpement, et developpement
developpement l » developpement il, developpement la, developpement de
prices 2.3.1.1 » primer 2.3.1.1, prices 2.2.5.7, prices 2.3.4
technology 6 » technology _, technology 1, technology 3
6 inflation » _ inflation, 2 inflation, d inflation
l afrique » en afrique
case l » case la, case 1, case 2

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

• Adding a wildcard symbol may retrieve word variants: technology 6 inflation _ prices 2.3.1.1 communication case l developpement l afrique.*.