You can learn how to perform a quick search after reading this topic.
If you search only in the topic on which you open the Quick menu, and your search strings are matched, the topic is displayed automatically. If there are no matches in the topic, a message Nothing found shows.
If you search a topic and its subtopics, and your search terms are matched, the Search Results view displays the top 500 ranked results. You can select a search result to display that topic. The words from your query are highlighted in the displayed topic. If there are no matches in the topic, a message Nothing found shows.