Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
d1 developpement » de developpement, du developpement, le developpement
information und » informations und
developpement l » developpement il, developpement la, developpement de
a information » 2 information, 1 information
technology a » technology 1, technology 3, technology 4
barriers d1 » barriers d, barriers 1.1, barriers 2.1
und langer » und lander, und lager, und lange
langer 2.7 » lander 2.1, lander 2.3, lander 2.4
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology a information und langer 2.7 communication barriers d1 developpement l afrique.*.