Perhaps you should try some spelling variations:
2c archaeometallurgy » 2.2 archaeometallurgy, _ archaeometallurgy, 1 archaeometallurgy
2c thesis » 2 thesis, _ thesis, a thesis
2c metal » sc metal, wc metal, sic metal
ic metal » sic metal, tic metal, sc metal
c metal » sic metal, c methyl
25 maii » 25 main, 26 maii, 15 maii
2 male » 2 make
25 mai » 25 may

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 (ic metal))) OR (c metal))lurgy%((2 male) OR (((25 maii) OR (25 mai))))%2c thesis%2c archaeometallurgy%((((2c metal) OR (ic metal))) OR (c metal))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22archaeology%((((2c metal) OR (ic metal))) or (c metal))lurgy%((2 male) or (((25 maii) or (25 mai))))%2c thesis%2c archaeometallurgy%((((2c metal) OR (ic metal))) or (c metal))%22".
• Adding a wildcard symbol may retrieve word variants: %22archaeology%((((2c metal) OR (ic metal))) or (c metal))lurgy%((2 male) or (((25 maii) or (25 mai))))%2c thesis%2c archaeometallurgy%((((2c metal) OR (ic metal))) or (c metal))%22*.