Perhaps you should try some spelling variations:
communication problem » communication problems, communications problems, communicating problem
formulation where » formulation over, formulation des, calculation where
technologies ret » technologies _, technologies 4, technologies 2
developpement en » developpement et, developpement des, developpement de
ret formulation » et formulation, re formulation, from formulation
a communication » la communication, data communication, data communications
1 developpement » de developpement, le developpement, et developpement
problem 1 » problem _, problem 3, problem 2

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

• Adding a wildcard symbol may retrieve word variants: technologies ret formulation where _ a communication problem 1 developpement en afrique.*.