Perhaps you should try some spelling variations:
2.2 archaeometallurgy » _ archaeometallurgy, 10 archaeometallurgy, social archaeometallurgy
2c archaeometallurgy » _ archaeometallurgy, 10 archaeometallurgy, social archaeometallurgy
1 archaeometallurgy » 10 archaeometallurgy, _ archaeometallurgy, archaeometallurgy _
2c metallurgy » 27 metallurgy, 2 metallurgy, _ metallurgy
my thesis » a thesis
2c metal » c metal, ic metal, sc metal
2 maldi » 12 maldi, 27 maldi, _ 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%((my thesis) OR (_ thesis))%((((2c archaeometallurgy) OR (1 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%((my thesis) or (_ thesis))%((((2c archaeometallurgy) OR (1 archaeometallurgy))) or (2.2 archaeometallurgy))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%2c metallurgy%2 maldi%((my thesis) or (_ thesis))%((((2c archaeometallurgy) OR (1 archaeometallurgy))) or (2.2 archaeometallurgy))%2c metal%22*.