Perhaps you should try some spelling variations:
interaction layer » interaction fiber, interaction inter, interaction chapter
3.2 communication » 3 communication, 2.3 communication, de communication
des developpement » des developpements, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
19 interaction » 10 interaction, 17 interaction, 2193 interaction
technology 19 » technology 1, technology 10, technology 11
layer made » layer model, layer node, layer modell
costs des » costs fees
l afrique » en afrique
made 3.2 » mode 3.2, made 3.6, trade 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology 19 interaction layer made 3.2 communication costs des developpement l afrique.*.