You have the possibility to search WissKI entities under WissKI Find. Enter your search term in the field Search by Entity Title and click Search WissKI Entities.
If you want to limit the search to certain bundles or even fields, open the Advanced Search section by clicking the caret and check the Bundles, you want to search in. As you do so, a new section in Paths arises at the bottom, where you can combine fields (Match All/Any) and filter operators (contains, starts with ...). Enter your search terms in the emtpy fields at the end of the row. When your finished, click Seach Wisski Entities.