Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
5.2 communications » 4.2 communications, 5.2 communication, 3.2 communication
trade development » software development
development band » development bank, development banks
technology 4 » technology _, technology 1, technology 3
band afrique » en afrique
4 inflation » _ inflation, 2 inflation, 6 inflation
costs trade » costly trade
cash 5.2 » case 5.2, cash 3.2, ash 5.3

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

• Adding a wildcard symbol may retrieve word variants: technology 4 inflation _ cash 5.2 communications costs trade development band afrique.*.