Perhaps you should try some spelling variations:
informations centuries » information centres, information centers, information centre
oral communication » personal communication
developing china » developing china's, development china, developing caring
technologien a » technologien am, technologien ad, technologien _
a informations » a information, 2 informations, 3 informations
4 developing » 3 developing
china africa » cpia africa, china asia
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien a informations centuries _ oral communication costs 4 developing china africa.*.