There are special short-code templates you can insert into the content area of any node which can display various search boxes.

When using the node editor, you can access various forms from the menu of search tools:

Here is a description of each search type:

Item	What Appears	Description
Search Form (this tree, all content)		This search form searches the node titles and content in the current tree only.
Search Form (this tree and linked trees, just node titles and tags)		This search form searches just node titles, tags, and keywords in the current tree and any trees that are linked to it via tree nodes.
Search Form (this tree and linked trees, all content)		This search form searches the node titles and all content in this tree and any trees that are linked to it via tree nodes.
Search Form (all trees: (titles and tags)		This search form searches tree titles and tags in all trees belonging to your organization. The search will return the list of trees that match the search term.
Search Form (all trees, just node titles, tags, and keywords)		This search form searches the node title, tags, and keywords of all trees within your organization. (You can hide a tree from searches using the Settings tool.)
Search Form (all trees, all contents)		This search form searches the title, tags, and content area of all trees within your organization. (You can hide a tree from searches using the Settings tool.)