There appears to be an error in the online help search.
https://www.microsoft.com/en-us/dynamics/crm-help-center/search/default.aspx
Using the link above, if you search for the word Marketing then no results will be rendered in the client's browser.
The results are returned to the client but fail to parse because the response JSON is invalid (example below)
,{"Title":"Why does the email message I sent have a "Pending Send" status? | Microsoft Dynamics CRM",
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