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