Perhaps you should try some spelling variations:
des developpement » des developpements, de developpement, le developpement
technology trade » technology trends, technology transfer, technology transfers
14 communication » 1.4 communication, 14 communications, 4 communication
developpement en » developpement et, developpement des, developpement de
integration 2.1 » integration 3.2, integration 3, integration 4
2.1 du » 2.1 due, 2.1 de, 2.1 do
du 14 » zu 14, db 14, du 15
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration 2.1 du 14 communication a des developpement en afrique.*.