Can the global search feature be used to retrieve supplier or AP invoice attachments?

We are looking for a solution to retrieve attachments that were entered on the payable invoice or supplier profile (our client is not using procurement as of today).

We have activated the global search (FUSION_APPS_SEARCH_ENABLED) and attachment search (ORA_FND_SEARCH_ATTACH_ENABLED) and have configured attachment search of Supplier and Payables invoices but the search return none of the attached documents.