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
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
developing 2 » developing _, developing a, developing e
etre mobile » more mobile, lte mobile, metric mobile
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
und etre » und ehre, und eine, und ehe
2 areas » 1 areas, 2 areal, 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 4.1 developing 2 areas.*.