Perhaps you should try some spelling variations:
oral communication » personal communication
information case » information based, information can, information costs
developing areas » developing asia, developing east, developing a
a developing » a development
case versus » cases versus, cash versus, care versus
versus oral » versus moral, versus rural, versus oil
areas areas » areas arenas, seas areas, areas access
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information case versus oral communication costs a developing areas areas.*.