Perhaps you should try some spelling variations:
data communication » data communications
leur developpement » le developpement, deux developpements, de developpement
informacion 13.2 » information 3.2, information 1.2, information 15.2
developpement de » developpement des, developpement durable
de afrique » de l'afrique, en afrique, l afrique
13.2 does » 13.8 does, 18.2 does, 13.2.2 does
does data » does cat

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

• Adding a wildcard symbol may retrieve word variants: technologies _ informacion 13.2 does data communication media leur developpement de afrique.*.