Perhaps you should try some spelling variations:
2c archaeometallurgy » 2.2 archaeometallurgy, _ archaeometallurgy, 1 archaeometallurgy
2c metallurgy » 27 metallurgy, 2 metallurgy, 10 metallurgy
2c thesis » 2 thesis, my thesis, i 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) OR (_ metallurgy))%2 maldi%((((2c thesis) OR (a thesis))) OR (_ thesis))%2c archaeometallurgy%2c metal%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%((2c metallurgy) OR (_ metallurgy))%2 maldi%((((2c thesis) or (a thesis))) or (_ thesis))%2c archaeometallurgy%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((2c metallurgy) OR (_ metallurgy))%2 maldi%((((2c thesis) or (a thesis))) or (_ thesis))%2c archaeometallurgy%2c metal%22*.