Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
et developpements » et developpement, des developpements, en developpement
developpements en » developpement en, developpement et, developpements de
selection wage » selection stage, selection based, selection chase
technology 1 » technology _
1 selection » 2 selection, 4 selection, 3.1 selection
wage rate » wage rates
rate 2.7 » rate 2.4, gate 2.7, rate 2.3
costs et » 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 1 selection wage rate 2.7 communication costs et developpements en afrique.*.