Perhaps you should try some spelling variations:
et litterature » la litterature, art literature
filosofia et » filosofia e, filosofia en, filosofia del
tests scale » tests stable, sets scale, tests shall
tests safe » tests safety, tests space, tests tafel

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests scale) OR (tests safe)) student _ filosofia et litterature*".