Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
3.2 communication » 3 communication, 2.3 communication, de communication
developpement en » developpement et, developpement des, developpement de
technologies co » technologies _, technologies 4, technologies 2
d developpement » de developpement, du developpement, le developpement
formation des » formation _
co formation » clot formation, n2o formation, non formation
des decades » des deces, des decideurs, last decades
barriers d » barriers _, barriers a, barriers 4

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

• Adding a wildcard symbol may retrieve word variants: technologies co formation des decades 3.2 communication barriers d developpement en afrique.*.