Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
events safety » agents safety
filosofia da » filosofia de, filosofia del, filosofia e
study die » study deep, study direct, study daniel

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: ((events safety) OR (plants safety)) ((study die) OR (study d)) filosofia da literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((events safety) OR (plants safety)) ((study die) or (study d)) filosofia da literatura".
• Adding a wildcard symbol may retrieve word variants: ((events safety) OR (plants safety)) ((study die) or (study d)) filosofia da literatura*.