Perhaps you should try some spelling variations:
oral communication » personal communication
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
developing av » developing a, developing ai, developing amp
contents new » contexts new, contents how, contents je
4 developing » 3 developing
av africa » v africa, iv africa, can africa
new oral » new moral, knew moral, new rural
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information contents new oral communication costs 4 developing av africa.*.