Perhaps you should try some spelling variations:
oral communication » personal communication
technologies 3.2 » technologies 3.1, technologies 2, technologies 2.1
information auch » information act, information age, information a
3.2 information » 4.2 information, 2.2 information, 2.3.2 information
developing 2 » developing _, developing a, developing e
auch die » durch die, sich die
die oral » die moral, die orte
2 areas » 1 areas, 2 areal, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.2 information auch die oral communication costs _ developing 2 areas.*.