Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologies 2 » technologies _, technologies 4
3.3 developing » 4 developing, 2 developing, 1 developing
costs u.s » costs uses, costs 4.2, costs 4.4
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
u.s oral » u.s oil

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information costs u.s oral communication costs 3.3 developing _ access.*.