Perhaps you should try some spelling variations:
2c archaeometallurgy » 2.2 archaeometallurgy, _ archaeometallurgy, 1 archaeometallurgy
2 metallurgy » 27 metallurgy, 12 metallurgy, _ metallurgy
a thesis » _ thesis
2c metal » c metal, ic metal, sc metal
20 maii » 20 mai, 30 maii, 2 maii
26 maii » 26 martii
2 mali » 2 maldi, 2 male, 2 maii

Try widening your search to All Fields.

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: %22archaeology%2 metallurgy%((((2 mali) OR (((20 maii) OR (26 maii))))) OR (26 mai))%a thesis%2c archaeometallurgy%2c metal%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%2 metallurgy%((((2 mali) or (((20 maii) OR (26 maii))))) or (26 mai))%a thesis%2c archaeometallurgy%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%2 metallurgy%((((2 mali) or (((20 maii) OR (26 maii))))) or (26 mai))%a thesis%2c archaeometallurgy%2c metal%22*.