Perhaps you should try some spelling variations:
trade interaction » trade integration, face interaction, time interaction
3.2 communication » 3 communication, 2.3 communication, de communication
technology trade » technology trends, technology transfer, technology transfers
et developpement » de developpement, le developpement, test development
developpement du » developpement de, developpement des, developpement et
interaction a » interaction _, interaction 1, interaction 4
scarce 3.2 » source 3.2, scale 3.2
efforts et » efforts _, effets et, effors pt
du afrique » en afrique, l afrique, de l'afrique
a scarce » _ scarce, a source, a scale

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

• Adding a wildcard symbol may retrieve word variants: technology trade interaction a scarce 3.2 communication efforts et developpement du afrique.*.