Perhaps you should try some spelling variations:
communications code » communication mode, communications case, communications models
4.1 transformation » 4.1 transformations, 3.1 transformation, 2.1 transformations
transformation der » transformation _
deux developpement » deux developpements, de developpement, du developpement
developpement en » developpement et, developpement des, developpement de
technology 4.1 » technology 3.1, technology 2.1, technology 1
der trade » der trager, der traum, fur trade
code deux » de deux, code de, code des

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 transformation der trade _ communications code deux developpement en afrique.*.