Perhaps you should try some spelling variations:
technology interaction » technology integration, technology international, technology introduction
leur developpement » le developpement, deux developpements, de developpement
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement de » developpement des, developpement durable
costs leur » costs clear
wage rate » wage rates
rate 6.2 » rates 6.2, rate 4.2, rate 5.2

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

• Adding a wildcard symbol may retrieve word variants: technology interaction _ wage rate 6.2 communication costs leur developpement de l'afrique.*.