Perhaps you should try some spelling variations:
testing during » testing spring, testing debugging
during studie » during studies, during study, during soldier
e filosofico » e filosofica, y filosofico, e filosofiche
filosofico e » filosofica e, filosofici e, filosofia e
studie e » studie 2, studie _, studie 1

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: testing during studie e filosofico e (literatur* OR literature*).
• Adding a wildcard symbol may retrieve word variants: testing during studie e filosofico e (literatur* or literature*)*.