Perhaps you should try some spelling variations:
voices communication » voice communication, voice communications, voice communicative
technologies ist » technologien ist, technologies ict, technologies iot
developing state » developing states, developing stable, developing strategy
ist information » iot information, first information, cost information
information age » information storage, information access, information about
3 developing » 3 development
state africa » trade africa
1.5 voices » 3.5 voices, 1 voices
age 1.5 » age 1.2, age 8.5, age 115

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

• Adding a wildcard symbol may retrieve word variants: technologies ist information age 1.5 voices communication a 3 developing state africa.*.