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