If you can’t find the bookmark you want, you can search the bookmarks list.
To search the bookmarks list:
Click the open-book icon at the left end of the bookmarks bar.
If you want to limit the search to a specific collection, click the collection in the Collections list.
In the search field at the upper-right corner of the bookmarks list, type a word or phrase. Results appear as you type.
To search in all the collections, click the All button above the list of search results.