Perhaps you should try some spelling variations:
4.2.2 communication » 4.2.1 communication, 4.2.4 communication, 8.2.2 communication
technology debts » technology debate, technology data, technology dlt
developpement en » developpement et, developpement des, developpement de
debts inflation » der inflation, does inflation, debt deflation
inflation rates » inflation rate
rates case » rates cape, states case, rates east
case 4.2.2 » coase 4.2.2, case 4.3.2, case 4.6.2

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

• Adding a wildcard symbol may retrieve word variants: technology debts inflation rates case 4.2.2 communication costs _ developpement en afrique.*.