Perhaps you should try some spelling variations:
4.2 developpement » 4.2 development, de developpement, le developpement
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
technology trade » technology trends, technology transfer, technology transfers
trade insulation » trade regulation, grade inflation, trade innovation
insulation wages » insulation case, insulation layer, insulation e2
developpement de » developpement des, developpement durable
wages race » wages trade, wage rate, wages case
de afrique » de l'afrique, en afrique, l afrique
race 2.7 » race 3.7, rate 2.7, rice 2.7

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

• Adding a wildcard symbol may retrieve word variants: technology trade insulation wages race 2.7 communication costs 4.2 developpement de afrique.*.