Perhaps you should try some spelling variations:
oral communication » personal communication
communication cost » communication costs, communication costa, communications costs
technologies 2 » technologies _, technologies 4
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
contents led » contents lead, contents head, contents less
developing a » developing _
led oral » led total, new oral
a africa » 1 africa, can africa, em africa

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents led oral communication cost 2.4 developing a africa.*.