Perhaps you should try some spelling variations:
5.4 communication » de communication, data communication
series inflation » series isolation, series information, series infromation
inflation rates » inflation rate
a developpement » au developpement, de developpement, le developpement
des afrique » en afrique, de l'afrique
rates case » rates cape, states case, rates east
case 5.4 » case 5.2, case 5.3, case 1.4
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 series inflation rates case 5.4 communication costs a developpement des afrique.*.