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