Perhaps you should try some spelling variations:
delphi studien » delphi studie, delphi study
der filosofica » de filosofia, e filosofica, e filosofia
da litterature » la litterature, de litterature, a litterature
filosofica da » filosofia da, filosofia de, filosofia di
test delphi » fast delphi, belts delphi
studien der » studie der, studien die, studenten der

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

• Adding a wildcard symbol may retrieve word variants: test delphi studien der filosofica da litterature*.