Perhaps you should try some spelling variations:
12 metallurgy » 10 metallurgy, 11 metallurgy, 10.2 metallurgy
2 metallurgy » 27 metallurgy, _ metallurgy, 4 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%((12 metallurgy) OR (2 metallurgy))%((2 maldi) OR (_ maldi))%2c thesis%_ archaeometallurgy%2c metal%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%((12 metallurgy) OR (2 metallurgy))%((2 maldi) or (_ maldi))%2c thesis%_ archaeometallurgy%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((12 metallurgy) OR (2 metallurgy))%((2 maldi) or (_ maldi))%2c thesis%_ archaeometallurgy%2c metal%22*.