Perhaps you should try some spelling variations:
13.3.9 communication » 13.3.10 communication, 13.4.5 communication, 3.3.2 communication
communication case » communications case, communication based, communication phase
information when » information what, information war, information wants
developpement du » developpement de, developpement des, developpement et
d developpement » de developpement, du developpement, le developpement
terminology 1 » terminology _, terminology 3, terminology 4
price 13.3.9 » price 1.3, price 6.3.2, prices 3.3.2
when price » when prices, when prime, wheat price
du afrique » en afrique, l afrique, de l'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: terminology 1 information when price 13.3.9 communication case d developpement du afrique.*.