Template:Google trends/doc

Usage
Creates a Google trends search link for the supplied term(s). By default, the search link is for the name of the page it is put on, if no term is provided. It is strongly recommended (but not required) that you SUBST: this template.

Search for multiple terms by separating them with commas.

Displays the terms(s) to search for, or use optional second parameter to display something else.