Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
die filosofia » di filosofia, de filosofia, e filosofia
sample study » example study
filosofia le » filosofia de, filosofia e, filosofia del
table study » bible study, table student

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 ((table study) OR (sample study)) die filosofia le literatura".
• Adding a wildcard symbol may retrieve word variants: tests ((table study) OR (sample study)) die filosofia le literatura*.