Perhaps you should try some spelling variations:
4.2.1 communication » 4.2.2 communication, 4.2.4 communication, 4.5.1 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
a developpement » au developpement, de developpement, le developpement
rates pt » states pt, rates _, rates a
pt 4.2.1 » ict 4.2.1, 2 4.2.1
costs a » costs _, costs 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 rates pt 4.2.1 communication costs a developpement en afrique.*.