(antony or cleopatra) and shakespear* and (power* or politic* or rome or roman)
this search will find references to items that contain the term shakespeare plus any variant endings, AND the terms anthony OR cleopatra OR both, AND the terms power OR, politic OR, rome OR, roman with power and politic truncated to pick up variant endings.
The title that appears in the image above is an example of the results you might expect when you perform this search in the Catalogue.