Adding a search item dictates stricter relevance requirements. Here, a sentence has to contain 2 intersections of 3 search items to be deemed a valid hit.
WHERE BODY LIKE '~alcohol ~sweets ~consumption'
Such a 2 intersection search finds this hit:
any public sleeping or EATING place, or any place or vehicle
where food or DRINK is manufactured, prepared, stored, or
any manufacturer or vendor of CANDIES or manufactured
Default intersection logic is to find the maximum number of set intersections possible in the stated query; that is, an "and" search where an intersection of all search items is required.