Perhaps you should try some spelling variations:
oral communication » personal communication
technologies iris » technologies icts, technologies iii, technologies series
iris information » paris information, dis information, ids information
information und » informations und
direkte oral » direkte oder
4 developing » 3 developing
und direkte » und direkter, und direktes, und direkt
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: technologies iris information und direkte oral communication costs 4 developing _ areas.*.