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 thesis » _ thesis, a thesis, my thesis
2 thesis » 2 thess, 2 theil, 2 themes
27 maldi » 17 maldi, 7 maldi, _ maldi
2c metal » c metal, ic metal, sc metal
2 maldi » 12 maldi, _ maldi, a maldi

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 (27 maldi))%((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%2c metallurgy%((2 maldi) OR (27 maldi))%((2c thesis) or (2 thesis))%((2c archaeometallurgy) or (2.2 archaeometallurgy))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%2c metallurgy%((2 maldi) OR (27 maldi))%((2c thesis) or (2 thesis))%((2c archaeometallurgy) or (2.2 archaeometallurgy))%2c metal%22*.