Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
developpement du » developpement de, developpement des, developpement et
formation under » formation des, formation over, estimation under
a developpement » au developpement, de developpement, le developpement
technology la » technology law, technology lag, technology land
under river » under five, under cover, under review
du afrique » en afrique, l afrique, de l'afrique
river 3.1 » river 1.1, river 3.4, river 4.1
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 la formation under river 3.1 communications costs a developpement du afrique.*.