Update app.py

app.py

@@ -81,7 +81,7 @@ def extract_invoices(file):
             if t:
                 text += t + "\n"
 
-    invoice_pattern = r'(?:Invoice\s*No|Invoice\s*Number|Inv\.?\s*No|Invoice\s*#|Bill\s*No)\s*[:#\-]?\s*([A-Za-z0-9\-\/]+)'
+    invoice_pattern = r'(?:Invoice\s*(?:No|Number)|Inv\.?\s*No|Invoice\s*#|Bill\s*(?:No|Number)|Bill\s*of\s*Supply\s*(?:No|Number)|BOS\s*No|Doc\s*No|Document\s*No|Reference\s*No)\s*[:#\-]?\s*\n?\s*([A-Za-z0-9\-\/]+)'
     invoice_matches = list(re.finditer(invoice_pattern, text, re.IGNORECASE))
 
     rows = []