document.selection.Find( "strFind", eeFindNext | eeFindSaveHistory | eeFindReplaceQuiet );

After this is run, all the options that belong to [Find/Replace in Files] now are cleared:
Display File Names Only
Keep Modified Files Open
Look in Subfolders
Save Backups
Use Output Bar

Even the Quiet status persists. Use Find Next/Previous manually, if not found, no message on the status bar.