Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
information based » information case, information bank, transformation based
der communication » de communication, under communication, debt communication
aids information » chandos information, series information
2 developing » 3 developing, 4 developing, 2 development
based des » based modes, based debt, based deep
des der » des dr, des ddr, des dem
cost 2 » cost 12, cost _, cost 4

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information based des der communication cost 2 developing _ areas.*.