Perhaps you should try some spelling variations:
2.2 archaeometallurgy » _ archaeometallurgy, 1 archaeometallurgy, 10 archaeometallurgy
2c archaeometallurgy » _ archaeometallurgy, 1 archaeometallurgy, 10 archaeometallurgy
2c metallurgy » 27 metallurgy, 2 metallurgy, _ metallurgy
2c metal » c metal, ic metal, sc metal
2 maldi » 12 maldi, 27 maldi, _ maldi
25 maii » 25 mai, 25 main, 26 maii
2 maii » 26 maii, 20 maii, 28 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%2c metallurgy%((((2 maldi) OR (2 maii))) OR (25 maii))%a thesis%((2c archaeometallurgy) OR (2.2 archaeometallurgy))%2c metal%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%2c metallurgy%((((2 maldi) or (2 maii))) or (25 maii))%a thesis%((2c archaeometallurgy) OR (2.2 archaeometallurgy))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%2c metallurgy%((((2 maldi) or (2 maii))) or (25 maii))%a thesis%((2c archaeometallurgy) OR (2.2 archaeometallurgy))%2c metal%22*.