Perhaps you should try some spelling variations:
2c archaeometallurgy » 2.2 archaeometallurgy, 1 archaeometallurgy, 10 archaeometallurgy
_ archaeometallurgy » archaeometallurgy _
2c thesis » 2 thesis, _ thesis, a thesis
2c metal » ic metal, sc metal, wc metal
27 maldi » 17 maldi, 2 maldi, 7 maldi
c metal » sic metal, c methyl

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 metal) OR (c metal))lurgy%27 maldi%2c thesis%((2c archaeometallurgy) OR (((_ archaeometallurgy) OR (_ archaeometallurgical))))%((2c metal) OR (c metal))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%((2c metal) OR (c metal))lurgy%27 maldi%2c thesis%((2c archaeometallurgy) or (((_ archaeometallurgy) or (_ archaeometallurgical))))%((2c metal) OR (c metal))%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((2c metal) OR (c metal))lurgy%27 maldi%2c thesis%((2c archaeometallurgy) or (((_ archaeometallurgy) or (_ archaeometallurgical))))%((2c metal) OR (c metal))%22*.