Search notes on iCloud.com
Search in notes to find the exact note you want — search for specific text, an emoji, a particular attachment or use a suggested search. All folders except the Recently Deleted folder are searched.
Go to icloud.com/notes, then sign in to your Apple Account (if necessary).
Tap the search field at the top of the notes list.
If you do not see the notes list, see Show the folder or notes list in Notes on iCloud.com.
To refine your search with Suggested Search, tap one of the options in the search list.
Type the text you want to search for.
To return to the complete notes list and clear the search, tap
in the search field.