The search supports term searches with flags for may contain, must contain, and must
not contain, as well as exact phrase searches.
meeting the term “meeting” and its related stems (meet, meets, meeting)
carried letter may contain one or both of “carried” (and its related stems) and “letter” (and its related stems)
shoes -gown contains “shoes” and must not contain “gown”.
+bread +alle must contain “bread” and must contain “alle”
"sheet of paper" contains the exact phrase “sheet of paper”
"exact copy" +letter contains the exact phrase “exact copy” and must contain “letter”