Find in Board
The bottom-left of the Board by the Overview Map is a magnifying glass that when clicked will create a search box. You can also bring this up by using the keyboard shortcut CTRL F.
Type your search term and any items with the search term will be highlighted. You can use the arrow-left & arrow-right icons to move through the found items.
When you are finished you can click the close icon to return to normal.
Please note: If any items are locked then they will not show up in search.