Perhaps you should try some spelling variations:
11.2.3 communication » 12.2.4 communication, 2.2.3 communication, 10.2.4 communication
communication case » communications case, communication based, communication phase
developpement il » developpement de, developpement et, developpement du
d developpement » de developpement, du developpement, le developpement
prices 11.2.3 » process 11.2.3, prices 11.3.1, prices 7.2.3
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
il afrique » l afrique, en afrique
case d » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation _ prices 11.2.3 communication case d developpement il afrique.*.