Perhaps you should try some spelling variations:
3.3.2 communication » 3.4.2 communication, 3.2.3.2 communication, 13.3.9 communication
developpement de » developpement des, developpement durable
technology flow » technology low, technology from, technology food
flow inflation » low inflation, food inflation, log inflation
case 3.3.2 » case 4.3.2, case 5.3.2, case 2.3.2
de afrique » de l'afrique, en afrique, l afrique
rate case » state case, write case, rate caps

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

• Adding a wildcard symbol may retrieve word variants: technology flow inflation rate case 3.3.2 communication costs _ developpement de afrique.*.