Perhaps you should try some spelling variations:
oral communication » personal communication
technologien dis » technologien des, technologien als, technologien im
dis information » mis information, aids information, des informations
information 1.3 » information 14.3, information 1.2, information 10.4
developing asia » development asia, developing a
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
asia areas » basic areas, aside areas, basin areas
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
1.3 book » 1.4 book, 1.5 book, 1.6 book

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information 1.3 book oral communication costs 4.1 developing asia areas.*.