Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
development east » development southeast, development 1
des development » does development, ides development, dams development
selection wage » selection stage, selection based, selection chase
technology 4 » technology _, technology 1, technology 3
east afrique » east africa, east african, en afrique
4 selection » 2 selection, 1 selection, de selection
wage rate » wage rates
costs des » costs fees
rate 2.7 » rate 2.4, gate 2.7, rate 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology 4 selection wage rate 2.7 communication costs des development east afrique.*.