On the Advanced Search screen, change the "Anywhere in record" drop-down to "Title" to locate a specific work or to "Author/Creator" to find books written by a particular chemist.
On the Advanced Search screen, change the "Anywhere in record" drop-down to "Subject" and enter chemistry
(or, more specialized terms, such as: "chemical kinetics"; metathesis; "organic compounds"; porphyrins).
Alternatively, if you are looking for materials on a more specific topic in chemistry, use "Anywhere in record":
To find material on metals and enzymes, type: metal* AND enzym*
(The "*" is a truncation symbol that will retrieve various forms of each word: metal, metals, metallic, enzyme, enzymes, enzymatic)