Perhaps you should try some spelling variations:
technologies model » technological model, technologies modelling, technological models
model calculation » model calibration, index calculation, size calculation
calculation where » calculations charge, calculation source, calculations phase
des developpement » des developpements, de developpement, le developpement
10 communication » 1 communication, de communication, 3 communication
developpement en » developpement et, developpement des, developpement de
where do » where _
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: technologies model calculation where do 10 communication a des developpement en afrique.*.