Perhaps you should try some spelling variations:
based selection » based detection, based solution, board selection
selection der » selektion der, selection de, selection des
der studies » der studie, der studien, order studies
cases case » causes case, crises case, cases based
case case » base case, case based, use case
base wage » base case

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: commercial ((cases case) OR (((case case) OR (base wage)))) based selection der studies.~.
• Adding a wildcard symbol may retrieve word variants: commercial ((cases case) or (((case case) or (base wage)))) based selection der studies.*.