Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
formulation model » circulation model, simulation model, population model
des developpement » des developpements, de developpement, le developpement
developpement la » developpement de, developpement et, developpement du
technologies 4 » technologies _
4 formulation » _ formulation, 3 formulation, 2 formulation
barriere des » barrieren des, karriere des, barriere der
model de » model due, model d, model du
la face » la farce, a face, la france

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 formulation model de _ communication barriere des developpement la face.*.