Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
debate informations » debt information, adequate information, des informations
technology debate » technology debts, technology related, technology state
3.5 developing » 3.3 developing, 3.2 developing, 1.5 developing
developing a » developing _
costs 3.5 » costs 4.2, costs 4.4, costs 2.3
und more » und mor, und morgen, und moral
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technology debate informations und more mobile communications costs 3.5 developing a areas.*.