Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.3 communications » 4.3 communication, 2.3 communication, 1.3 communication
developpement l » developpement il, developpement la, developpement de
technology 3.1 » technology 1, technology 2.2, technology _
3.1 election » 3.1 selection, 13.1 selection, 3.3.1 election
time rate » crime rate, prime rate, time water
l afrique » en afrique
rate 4.3 » rates 4.3, rate 2.4, rate 5.4

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

• Adding a wildcard symbol may retrieve word variants: technology 3.1 election time rate 4.3 communications costs _ developpement l afrique.*.