Have you ever made updates to your site's content—things like making metadata updates, adding or removing content, or changing the sharing settings—only to find your changes aren't showing up in your site's search? If so, you might want to try our new manual refresh option.
How to manually refresh your site's content:
Make sure you're logged in and on edit mode for your site
To confirm, make sure your browser URL looks something like your-site-your-org.hub.arcgis.com/editOpen the Content Library

You can find this by clicking your site's dropdown and selecting Content Library. This will redirect you to the Content Library for your site (e.g. your-site-your-org.hub.arcgis.com/content/edit)Click Check for Content Updates from the More Menu
The More Menu can be found by clicking ••• on the upper right of the Hub navigation bar
Once you do that, a manual reindex request has been sent to the Hub indexing system and should be reflected in your site's search within a few minutes. If you're still seeing issues with changes not showing up, then feel free to post a question in the Hub Geonet community.
Happy Hubbing!