Perhaps you should try some spelling variations:
2.2 archaeometallurgy » _ archaeometallurgy, 10 archaeometallurgy, social archaeometallurgy
1 archaeometallurgy » 10 archaeometallurgy, _ archaeometallurgy, _ archaeometallurgical
2c metallurgy » 27 metallurgy, _ metallurgy, 10 metallurgy
2 metallurgy » 27 metallurgy, 12 metallurgy, _ metallurgy
2c thesis » 2 thesis, _ thesis, a thesis
2c metal » c metal, ic metal, sc metal
2 maldi » 12 maldi, 27 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) OR (2 metallurgy))%((2 maldi) OR (_ maldi))%2c thesis%((((1 archaeometallurgy) OR (2.2 archaeometallurgy))) OR (archaeometallurgy _))%2c metal%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%((2c metallurgy) or (2 metallurgy))%((2 maldi) or (_ maldi))%2c thesis%((((1 archaeometallurgy) OR (2.2 archaeometallurgy))) or (archaeometallurgy _))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((2c metallurgy) or (2 metallurgy))%((2 maldi) or (_ maldi))%2c thesis%((((1 archaeometallurgy) OR (2.2 archaeometallurgy))) or (archaeometallurgy _))%2c metal%22*.