Perhaps you should try some spelling variations:
13.3.9 communication » 13.3.10 communication, 13.4.5 communication, 3.3.2 communication
developpement de » developpement des, developpement durable
inflation rates » inflation rate
technology low » technology flow, technology law, technology led
low inflation » core inflation, _ inflation
case 13.3.9 » case 1.3.4, case 12.2.9, case 12.3.2
rates case » rates cape, states case, rates east
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology low inflation rates case 13.3.9 communication costs _ developpement de afrique.*.