Perhaps you should try some spelling variations:
main communication » spain communications, human communication, oman communications
2.1 developpement » 2.1 development, 2007 developpement, de developpement
developpement de » developpement des, developpement durable
interaction set » interaction sites, interaction term, interaction data
de afrique » de l'afrique, en afrique, l afrique
data main » data man, data making, data mart
costs 2.1 » costs 2.3, costs 4.1, costs 2.2
set data » det data, pet data, sit data

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

• Adding a wildcard symbol may retrieve word variants: technologies _ interaction set data main communication costs 2.1 developpement de afrique.*.