Advanced Search allows you to see your search history and build searches as shown below.
Lister Hill Library
Combine result sets by using AND, OR or not using the search history numbers. Click on the "Items found" link to rerun a search.
You can also search using the Search Builder, a way to to construct a search one concept at a time. Learn how by watching the video below. This technique is particularly useful if you know the MeSH term you want to search. The same process can be used to search using field tags such as author, grant number, publication type or journal.