Perhaps you should try some spelling variations:
das developpement » des developpements, de developpement, du developpement
c's communication » lea's communication, class communication, mass communication
developpement en » developpement et, developpement des, developpement de
validation data » validation des, validation stage
typologies 3.3 » typologies 2.3, typologies 3.2, typologies 6.3
3.3 validation » _ validation, 4 validation
data dem » data den, data does, data do
a das » 1 das, 2 das, 3 das

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

• Adding a wildcard symbol may retrieve word variants: typologies 3.3 validation data dem c's communication a das developpement en afrique.*.