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
3.3 developing » 4 developing, 2 developing, 1 developing
developing av » developing a, developing ai, developing amp
contents new » contexts new, contents how, contents je
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
av africa » v africa, iv africa, can africa
new oral » new moral, knew moral, new rural

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 3.3 developing av africa.*.