Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developing across » developing cross, development across, developing areas
technologies iot » technologies ict, technologies icts, technologies art
information case » information based, information can, information costs
iot information » ist information, cost information, plot information
4 developing » 3 developing
costs 4 » costs _, costs a, costs 4.2
case a » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technologies iot information case a personal communication costs 4 developing across africa.*.