Perhaps you should try some spelling variations:
trade communication » true communication, stroke communication, radio communication
communication 3.3.1 » communication 13.3.1, communication 3.2.1, communication 3.3.4
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
2 interaction » 3 interaction, 3.2 interaction, 3.1 interaction
technology 2 » technology _, technology 1, technology 3
3.3.1 a » 3.3.1 _, 3.3.1 das
a 10 » _ 10, 9 10, 7 10

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology 2 interaction ((a 10) OR (a 1)) trade communication 3.3.1 a developpement de l'afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology 2 interaction ((a 10) OR (a 1)) trade communication 3.3.1 a developpement de l'afrique.*.