Perhaps you should try some spelling variations:
20 martin » 10 martin, v2.0 martin, 20 marine
2 machine » 8 machine
23 1889 » 1823 1889
f 1889 » _ 1889, 2 1889
1 1889 » _ 1889, 1 1819, 1 1829

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 (2 machine)) %((((2((f 1889) OR (1 1889))) OR (((f 1889) OR (1 1889))))) OR (23 1889))-1976%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22heidegger%((20 martin) or (2 machine)) %((((2((f 1889) OR (1 1889))) or (((f 1889) OR (1 1889))))) or (23 1889))-1976%22".
• Adding a wildcard symbol may retrieve word variants: %22heidegger%((20 martin) or (2 machine)) %((((2((f 1889) OR (1 1889))) or (((f 1889) OR (1 1889))))) or (23 1889))-1976%22*.