Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
stable states » states states, stable sets, metastable states
stable state » unstable states, stable sets, stable set
de filosofia » e filosofia, di filosofia, la filosofia
filosofia da » filosofia de, filosofia del, filosofia e

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 ((stable state) OR (stable states)) de filosofia da literatura".
• Adding a wildcard symbol may retrieve word variants: tests ((stable state) OR (stable states)) de filosofia da literatura*.