Perhaps you should try some spelling variations:
20 martin » 10 martin, v2.0 martin, 20 marian
20 marine » 10 marine, 20 making
12 martin » 2 martin, 12 marine, 12 main
23 1889 » 1823 1889
f 1889 » _ 1889, 1 1889
2 1889 » 2 1829, _ 1889, 2 1819

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: %22heidegger%((((20 martin) OR (20 marine))) OR (12 martin)) %((((2((f 1889) OR (2 1889))) OR (((f 1889) OR (2 1889))))) OR (23 1889))-1976%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22heidegger%((((20 martin) or (20 marine))) or (12 martin)) %((((2((f 1889) OR (2 1889))) or (((f 1889) OR (2 1889))))) or (23 1889))-1976%22".
• Adding a wildcard symbol may retrieve word variants: %22heidegger%((((20 martin) or (20 marine))) or (12 martin)) %((((2((f 1889) OR (2 1889))) or (((f 1889) OR (2 1889))))) or (23 1889))-1976%22*.