Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
technology debts » technology debate, technology data, technology dlt
inflation causes » inflation crises, inflation rates, inflation taxes
developpement de » developpement des, developpement durable
debts inflation » der inflation, does inflation, debt deflation
causes case » crises case, causes costs
de afrique » de l'afrique, en afrique, l afrique
case 2.2 » cases 2.2, case 4.2, case 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology debts inflation causes case 2.2 communication costs _ developpement de afrique.*.