Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technology risks » technology risk, technological risks, technology r
developpement en » developpement et, developpement des, developpement de
risks migration » risky migration, risks immigration, mass migration
a developpement » au developpement, de developpement, le developpement
rates dhs » rates des, rates d, rates der
dhs data » das data, hbs data, gas data
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 risks migration rates dhs data communications costs a developpement en afrique.*.