Links can be in your read or unread lists of (my) links, which can get very large over time. You can go to the lists and enter the search at the top of the list to search for a keyword that might be included in the title or summary of the link.
When you share links with Zholink, a good practice is to tag those links. Why? You can browse or search for tags, select one, and view all the links that have been tagged with that link. Furthermore, you can search within that tag list to narrow down the list even more.