Perhaps you should try some spelling variations:
part communication » parte communication, post communication, put communication
communication cost » communication costs, communication costa, communications costs
technologien dis » technologien des, technologien als, technologien im
dis information » mis information, aids information, des informations
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
contents 3.1 » contents 1, contents _, contents map
3.1 part » 1.1 part, 2.1 part, 4.1 part
cost 1.3 » cost 11.3, cost 1.2, cost 2.3

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information contents 3.1 part communication cost 1.3 developing _ africa.*.