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
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
technology der » technology does, technology 4ir, technology dlt
der simulation » 4 simulation, 3 simulation, 3.1 simulation
state trade » states trade, states traded, slave trade
trade 1.1 » trade 4.1, trade 2.1, trade 1.3
l afrique » en afrique
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 der simulation state trade 1.1 communication costs a developpement l afrique.*.