Perhaps you should try some spelling variations:
simulation solution » formulation solution, simulation relation, simulation condition
ecology simulation » technology simulation, recovery simulation, policy simulation
a communications » a communication, data communications, a communicative
development en » developpement en, development menu, development eco
solution 5 » solution _, solution 3, solution 4
5 does » 2 does, 4 does
does a » does _
a mine » _ mine, a mile, a marine
a mini » _ mini, a mining

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: "ecology simulation solution 5 does a communications ((a mine) OR (a mini)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: ecology simulation solution 5 does a communications ((a mine) OR (a mini)) development en afrique.*.