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 _
27 metallurgy » _ metallurgy
2c metallurgy » 2 metallurgy, _ metallurgy, 10 metallurgy
2c thesis » _ thesis, a thesis, my thesis
2c metal » c metal, ic metal, sc metal
2 thesis » 2 thess, 2 theil, 2 themes
12 maldi » 16 maldi, 17 maldi, 2 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 (27 metallurgy))%12 maldi%((2c thesis) OR (2 thesis))%((2c archaeometallurgy) OR (((2.2 archaeometallurgy) OR (1 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 (2 thesis))%((2c archaeometallurgy) or (((2.2 archaeometallurgy) or (1 archaeometallurgy))))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((2c metallurgy) or (27 metallurgy))%12 maldi%((2c thesis) OR (2 thesis))%((2c archaeometallurgy) or (((2.2 archaeometallurgy) or (1 archaeometallurgy))))%2c metal%22*.