If you are not sure what your topic is all about, check it out in a dictionary or encyclopedia.
Books are a good starting point.
Use the word search in the library's catalogue. You can search on words like social Darwinism . Looking through journals in the hope of finding relevant material is time consuming. It is better to use the databases or printed indexes to find journal articles on your topic. Based on print bibliographies of the Royal Historical Society and the Institute of Historical Research, this database is a comprehensive guide to historical writing about the history of Britain, Ireland and the British overseas.