Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
election crime » detection crime, election time, election crisis
technology 3 » technology _, technology 1, technology 4
des afrique » en afrique, de l'afrique
3 election » _ election, 3 electron, 3.1 election
rates 4.2 » rates 4.5

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

• Adding a wildcard symbol may retrieve word variants: technology 3 election crime rates 4.2 communications costs _ developpement des afrique.*.