Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
de literatura » la literatura, y literatura, a literatura
scale studien » scale studies, scale student, duale studien
es filosofia » e filosofia, la filosofia, di filosofia
em filosofia » e filosofia, la filosofia, di filosofia
texto scale » femto scale, texture scale, texto social

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: texto scale studien ((es filosofia) OR (em filosofia)) ((de literatura) OR (de litterature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "texto scale studien ((es filosofia) or (em filosofia)) ((de literatura) OR (de litterature))".
• Adding a wildcard symbol may retrieve word variants: texto scale studien ((es filosofia) or (em filosofia)) ((de literatura) OR (de litterature))*.