Perhaps you should try some spelling variations:
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
simulation state » simulation states, simulation stage, simulation system
de developpement » sme development
developpement de » developpement des, developpement durable
technology die » technologie die, technology does, technology 4ir
die simulation » der simulation, data simulation, eddy simulation
space 1.1 » spaces 1.1, space 2.1, space 4.1
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technology die simulation state space 1.1 communication a de developpement de l'afrique.*.