Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
election river » election winner, election time, election voter
technology us » technology use, technology used, technology uses
us election » u.s election, u.s elections, _ election
de afrique » de l'afrique, en afrique, l afrique
water de » water _, water a, water 2
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 us election river water de communication costs a developpement de afrique.*.