Try pairing your chosen text, film, or painting with various themes or concepts. See examples below.
Picasso AND Guernica
Picasso AND war*
Picasso AND Guernica AND horse
Picasso AND Guernica AND minotaur
Picasso AND Franco
Picasso AND "Spanish Civil War"
Adding quotation marks around a phrase "tells" the database/search engine to find results with that exact phrase. Placing an asterisk (*) at the end of a root word indicates to the system that you are looking for the root word as well as its various word endings.
Example Search in JSTOR