Perhaps you should try some spelling variations:
coastal states » coastal systems, coastal waters, coastal water
del literatur » model literatur, teil literatur, igel literatur
studies lab » studies land, studies late, studies lead
studies la » studies lca, studies lia, studies l2

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: "coastal states ((studies la) OR (studies lab)) filosofia del literatur".
• Adding a wildcard symbol may retrieve word variants: coastal states ((studies la) OR (studies lab)) filosofia del literatur*.