Perhaps you should try some spelling variations:
"studie theorie linguistik" » "studie theory linguistic", "studie theoretische linguistik", "studie theorie diagnostik", "studies theories linguistik", "studium theorien linguistik", "studie therapie linguistik"
"sturm theory linguistics" » "sturm typology linguistics", "study theory linguistics", "sturmian theory linguistics", "gesture theory linguistics"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("studie theorie linguistik") OR ("sturm theory linguistics"))*.
• Removing quotes may allow a broader search: (( studie theorie linguistik ) or ( sturm theory linguistics ))*.