You can open "Search" page from side navigation menu. Searchable and installed resources are displayed on this page. They are arranged by different sections. In each section, there is a search input and links to search a particular resource.
Enter words in search input and select a resource to search for the entered words in selected resource.
To search for "love" in all available bible topic resources:
Go to section "Topics"
Enter "love" in search input
Select "Search ALL Topical References"