Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
model communications » modern communications, border communications, aided communications
technologien dis » technologien des, technologien als, technologien im
developing waste » developing east, developing water, developing eastern
dis information » mis information, aids information, des informations
information 1 » information 2, information 3, information 3.2
4 developing » 3 developing
waste trends » case trends, base trends, wage trends
state model » stage model, scale model
1 state » 2 state, 3 state
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: technologien dis information 1 state model communications costs 4 developing waste trends.*.