Perhaps you should try some spelling variations:
data communication » data communications
isolation indices » inflation indices, isolation policies, citation indices
indices advanced » des advanced, does advanced, under advanced
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
advanced data » advanced digital
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology _ isolation indices advanced data communication costs a developpement en afrique.*.