Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
leur developpement » le developpement, deux developpements, de developpement
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
formation across » information across, variation across, variations across
developpement de » developpement des, developpement durable
barriers leur » barriers learn, barriers law, barriers been
across rice » across nine, across africa, across crises
de afrique » de l'afrique, en afrique, l afrique
rice 4.1 » rice 2.1, rice 3.1, rice 1

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

• Adding a wildcard symbol may retrieve word variants: technology _ formation across rice 4.1 communication barriers leur developpement de afrique.*.