Perhaps you should try some spelling variations:
technologies series » technology series
series information » business information
oral communication » personal communication
a developing » a development
model des » modell des, modelle des, model codes
des oral » des moral, des oil, des orts
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies series information model des oral communication costs a developing _ areas.*.