Search the list on the page with the search box of the list tools (#filter_search), then wait for the list to reload.
Examples
When I search the list for "Welcome"
When I search the list for "Typography"
When we search the list for "member"
And I search the list for "Blog"
When search the list for "Main Menu"
Pattern
When(/^(I |we )*search the list for "([^"]*)?"$/, …)
Part of @webship-js/joomla-steps (github.com/webship/joomla-steps), a step pack for Webship-js 2.0.x.