InvoiceOcean allows you to search throughout all of your invoices (Income > Invoice).
You may narrow any search using i.e. the ‘Enter keyword or number’ field.
The ‘Enter keyword or number’ field is responsible for searching in fields like:
number of the document (up to 50 first items);
VAT ID (up to 20 f. i.);
Recipient (up to 90 f. i.);
Name and surname of the Recipient (up to 25 f. i.);
Seller (up to 30 f. i.);
First position - only if there is just this one (up to 30 f. i.);
Estimate number (up to 25 f. i.);
Correspondence address (up to 45 f. i.);
Gross/net price of the invoice.
Additionally, when you mark the checkbox 'Exact search',
system will search through extra fields like: