Perhaps you should try some spelling variations:
2.2 archaeometallurgy » _ archaeometallurgy, 10 archaeometallurgy, social archaeometallurgy
1 archaeometallurgy » 10 archaeometallurgy, _ archaeometallurgy, archaeometallurgy _
2c metallurgy » 27 metallurgy, _ metallurgy, 10 metallurgy
2 metallurgy » 27 metallurgy, 12 metallurgy, _ metallurgy
2c thesis » _ thesis, a thesis, my thesis
27 maldi » 17 maldi, 7 maldi, _ maldi
2 thesis » 2 thess, 2 thesen, 2 theil
2c metal » c metal, ic metal, sc metal
2 maldi » 12 maldi, _ 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 (27 maldi))%((2c thesis) OR (2 thesis))%((1 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 (2 metallurgy))%((2 maldi) or (27 maldi))%((2c thesis) or (2 thesis))%((1 archaeometallurgy) or (2.2 archaeometallurgy))%2c metal%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((2c metallurgy) OR (2 metallurgy))%((2 maldi) or (27 maldi))%((2c thesis) or (2 thesis))%((1 archaeometallurgy) or (2.2 archaeometallurgy))%2c metal%22*.