Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
5.3 communications » 2.3 communication, 4.3 communication, 1.3 communication
technology price » technology rich, technology voice, technology service
developpement en » developpement et, developpement des, developpement de
inflation der » inflation index, inflation _, inflation tax
der case » per case, dar case, der care
case 5.3 » case 2.3, case 5.2, case 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology price inflation der case 5.3 communications costs _ developpement en afrique.*.