Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
study presentation » study representations, study implementation, future presentation
presentation same » presentation ease, representation some, presentation based
do communications » 10 communications, 14 communications, 2 communications
developing matter » developing after, developing water, developing patterns
4 developing » 3 developing
matter oder » matter over, mutter oder, matter cover
same post » sample post, state post, samoa post
post do » most do, post de, post doha
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology study presentation same post do communications costs 4 developing matter oder.*.