Add more terms by clicking the + icon
and select in which field of the documents you want each term to be present.
Note that each term gets searched only in its respective field.
(You can use simple search box at the top or on the main page for general searches.)
Combine your terms with the AND, OR, NOT operators
AND results in documents containing both of the flanking terms
OR results in documents containing at least one, but not necessarily all, of the terms
NOT excludes all the documents containing the term, even if the document satisfies the other search criteria