Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
caused process » based process, causal process, focused process
developments l » developments _, developments 4, developments 3
technology tb » technology tax, technology tpm, technology txt
tb infections » tb infection, _ infections, 4 infections
process 3.1 » process 3.2, process 2.1, process 2.2
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology tb infections caused process 3.1 communications costs _ developments l afrique.*.