The Block Search Builder is a tool designed to teach you how to create a search query using Boolean logic. You should be able to cut and paste the resulting string into the search boxes of most databases.
Type your core concepts / main keywords (1, 2 and 3) in the upper row, and your alternate terms for each concept/ keyword in the rows below. Clicking the 'create-button' will combine all terms into a proper search query/string with the AND & OR-operators.
Now copy and paste the above search string into a database search box.
The 'Search Strategy Builder' was developed by the University of Arizona Libraries(CC BY-NC-SA 3.0 US).