Perhaps you should try some spelling variations:
technology debts » technology debate, technology data, technology dlt
developpement en » developpement et, developpement des, developpement de
debts inflation » der inflation, does inflation, debt deflation
4 communication » 3 communication, 5.4 communication, de communication
4 developpement » de developpement, le developpement, et developpement
rate 6.4 » rates 6.4, rate 2.4, rate 5.4
costs 4 » costs _, costs a, costs 4.2
6.4 4 » 6.4 _, 6.4 a, 3.4 4

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

• Adding a wildcard symbol may retrieve word variants: technology debts inflation rate 6.4 4 communication costs 4 developpement en afrique.*.