Article - Keywords's search not working

Hello, I'm having trouble with Keywords's search on article. 

I think I configured the Quick Find correctly:

• I ensured that the keyword searchable attribute was set to true
• I configured the Article Quick Find view by clicking on Add Find Columns and I ensured that the keyword was checked
• When I created my article, I add a keyword called "example"

But when I perform a search on articles, I set the filter on keywords and I type "example", nothing is displayed :/ 

Did I forgot a step?