Canadian Forest Service Publications

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The search engine has four matching types.

Match All: In this mode, ALL of the entered terms must match. This is equivalent to boolean AND.
Match Any: In this mode, ANY of the entered words must match. This is equivalent to boolean OR
Match Phrase: Here, the exact phrase is matched.
Match Boolean: Here you can use various boolean syntax combinations *. For example:

explicit AND operator	hello & world
OR operator	hello \| world
NOT operator	hello !world hello -world
Grouping	(hello world) (hello -world) \| (cat & dog)

* If no operator is specified, the default operator is AND. So "hello world" is the same as "hello & world"