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
2.1 developing » 2.2 developing, 2.3 developing, 2.6 developing
developing a » developing _
etre mobile » more mobile, lte mobile, metric mobile
costs 2.1 » costs 2.3, costs 4.1, costs 2.2
und etre » und ehre, und eine, und ehe
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 etre mobile communications costs 2.1 developing a areas.*.