Perhaps you should try some spelling variations:
1 archaeometallurgy » 10 archaeometallurgy, _ archaeometallurgy, 2.2 archaeometallurgy
2c metallurgy » 27 metallurgy, 2 metallurgy, _ metallurgy
2c metal » c metal, ic metal, sc metal
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 maii) OR (25 maii))%_ thesis%1 archaeometallurgy%2c metal%22.
• Adding a wildcard symbol may retrieve word variants: %22archaeology%2c metallurgy%((2 maii) or (25 maii))%_ thesis%1 archaeometallurgy%2c metal%22*.