Perhaps you should try some spelling variations:
3.7 communication » 3.2 communication, 2.7 communication, 3.5 communication
technology users » technology use, technology series, technology transfers
developpement de » developpement des, developpement durable
e developpement » de developpement, le developpement, et developpement
users decision » use decision, use decisions, meets decision
decision wage » decision water, decision maker, decision based
de afrique » de l'afrique, en afrique, l afrique
wage rate » wage rates
rate 3.7 » rate 2.7, rate 3.4, rate 3.6
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology users decision wage rate 3.7 communication costs e developpement de afrique.*.