Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
data communication » data communications
conformacion des » conformacion del, conformacion de, consommation des
developpement de » developpement des, developpement durable
technologies 2 » technologies _, technologies 4
2 conformacion » la conformacion, _ conformation, _ conformations
de afrique » de l'afrique, en afrique, l afrique
code data » codes data, wide data
des code » des codes, der code, de code

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 conformacion des code data communication barriers _ developpement de afrique.*.