Perhaps you should try some spelling variations:
interaction trade » integration trade, intervention trade, interaction aware
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
developpement de » developpement des, developpement durable
3.2 interaction » 3.2 introduction, face interaction
4 developpement » de developpement, le developpement, et developpement
technology 3.2 » technology 2.2, technology 3.1, technology 2
de afrique » de l'afrique, en afrique, l afrique
trade 4.1 » trade 2.2, trade 3.2
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 3.2 interaction trade trade 4.1 communication costs 4 developpement de afrique.*.