Perhaps you should try some spelling variations:
transformation gas » transformation case, transformation hans, transformation a
et transformation » e transformation, next transformation, der transformation
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
a developpement » au developpement, de developpement, le developpement
technology et » technology e, technology ecit, technology eimt
des afrique » en afrique, de l'afrique
gas trade » u.s trade, us trade
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology et transformation gas trade 6.2 communication costs a developpement des afrique.*.