Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
4 communication » 3 communication, 5.4 communication, de communication
technologies 3 » technologies _, technologies 4, technologies 2
formulation de » formulation des, formulacion de, formulation du
3 formulation » _ formulation, _ formulating
barriere der » barrieren der, barrieren des, barriera di
de farce » der farce, de arce, de force
de does » der does, do does, one does
does 4 » does _, does a, does e

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 formulation de does 4 communication barriere der developpement de farce.*.