Enter a search in Quicksearch to search across Orbis, Morris and Articles+. You will probably get a very large set of results, only 20 of which will be displayed (10 from Books+ and 10 from Articles).
You can quickly scan the list of results. If any result looks interesting, click on that result and you will see details.
Tip: Only a small set is displayed in Quicksearch. Use See XXX Results to look at more results.
To see results from Orbis and Morris, with no Articles+ results, click on the indicator to "see xxx results."
After this selection you will see only the results from Books+. Facets and other functionality will now be available.
You can do the same thing for Articles+.