Perhaps you should try some spelling variations:
2c thesis » 2 thesis, _ thesis, my thesis
wc metal » c metal, sc metal, sic metal
ic metal » sic metal, tic metal, c metal
a thesis » _ thesis
2 maldi » 12 maldi, 27 maldi, _ maldi

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