I think you may be over-complicating the search, Paul.
When searching for an RD number in the database I always start by initially simply typing in the number then add more search parameters if I get no results.
If you open the site at
http://glassgallery.yobunny.org.uk/, you don't even need to log in. Simply click on the blue 'search' tag at the right-hand end of the line below the 'log in' tag to open the 'search' menu at
http://glassgallery.yobunny.org.uk/search.php and ensure that the 'title', 'captions' and 'keywords' boxes are ticked, then type in the RD number 103434 in the 'search' box - then the 4 thumbnails should appear.
You can, of course, log in to the site and get then same results.
Typing Greener 103434 in the search box also bring up the thumbnails, BUT
Henry Greener 103434 does not, for some reason. This may well be because the entries were made with the RD number being attributed to Greener & Co., Sunderland rather than Henry Greener. I used Thompson's attributions on page 15 of 'The Identification of English Pressed Glass 1842-1908' where she indicates that all Greener registrations from RD 38582 of 23 November 1885 onwards were by Greener & Co., Sunderland.
Hope this helps. If not, then Anne may be able to resolve the issue.
Fred.