An interesting finding here. The term "Psychology of Vision" barely registered and thus we had very little data. Other terms such as "Lency Spezzano" or "Steps to Leadership" did not register at all. The term "Chuck Spezzano" enjoyed a higher number of hits and the results were copious enough to provide some more detail, with Germany being the only country to have enough searches to warrant a report:
https://www.google.com/trends/explore#q=%22chuck%20spezzano%22
What follows are the Germany-specific statistics:
Below: Updated charts, Mar. 19, 2019:
From 2004-Mar. 2019, the interest continues to dwindle. It is a safe bet many of the present hits come from the community of critics and hopefully from law enforcement and government regulators.
Germany has been overtaken by Austria and Switzerland in terms on European online interest. No region outside of Europe had enough hits to register a chart.
Austrian hits 2004-2019
Swiss hits 2004-2019
German hits 2004-2019
Bavaria continues to be Chuck's stronghold in Germany. The charts for all three regions are the same as the country as a whole.