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 du » developpement de, developpement des, developpement et
e developpement » de developpement, le developpement, et developpement
users decision » use decision, use decisions, meets decision
decision wages » decision water, decision makers, decision biases
wages race » wages trade, wage rate, wages case
du afrique » en afrique, l afrique, de l'afrique
race 3.7 » races 3.5, range 3.7, race 1.4
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 wages race 3.7 communication costs e developpement du afrique.*.