Perhaps you should try some spelling variations:
des communication » les communications, nets communication, c's communication
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
preface cas » preface a, preface ai, preface des
costs 2.3 » costs 4.2, costs 4.4
cas des » cas de, cases des, dans des

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

• Adding a wildcard symbol may retrieve word variants: technologien des information preface cas des communication costs 2.3 developing _ areas.*.