Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
developpement en » developpement et, developpement des, developpement de
4 communication » 3 communication, 5.4 communication, de communication
a developpement » au developpement, de developpement, le developpement
technologies 4 » technologies _
creacion one » creacion de, creation de, creacion y
4 creacion » 3 creacion, 4 creation, 1 creacion
barriers a » barriers _, barrier _
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 4 creacion one does 4 communication barriers a developpement en afrique.*.