Perhaps you should try some spelling variations:
2.2 archaeometallurgy » _ archaeometallurgy, 1 archaeometallurgy, 10 archaeometallurgy
2c archaeometallurgy » _ archaeometallurgy, 1 archaeometallurgy, 10 archaeometallurgy
2c metallurgy » 2 metallurgy, _ metallurgy, 10 metallurgy
27 metallurgy » _ metallurgy
2c thesis » 2 thesis, _ thesis, my thesis
12 maldi » 16 maldi, 17 maldi, 2 maldi
a thesis » _ thesis
2c metal » c metal, ic metal, sc metal

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 (27 metallurgy))%12 maldi%((2c thesis) OR (a 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) or (27 metallurgy))%12 maldi%((2c thesis) OR (a thesis))%((2c archaeometallurgy) or (2.2 archaeometallurgy))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((2c metallurgy) or (27 metallurgy))%12 maldi%((2c thesis) OR (a thesis))%((2c archaeometallurgy) or (2.2 archaeometallurgy))%2c metal%22*.