Perhaps you should try some spelling variations:
communication codes » communication modes, communication costs, communication model
oral communication » personal communication
information 6.5.2 » information 1.5.2, information 3.5.2, information 6.3.2
developing asia » development asia, developing a
technologies 2 » technologies _, technologies 4
1 developing » 3 developing, 4 developing, 2 developing
asia access » basic access, basin access, asia across
6.5.2 how » 6.5.3 how
how oral » how moral, how rural, how arab
codes 1 » codes _, modes 1, code 1

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 6.5.2 how oral communication codes 1 developing asia access.*.