It's an important page. I think you should update it a bit to make searching better, easier. There's a list of what I would change:
- Search for only renamed items (and for custom description too) like uncraftables.
- Extended craft/crate/medal/level number searching. "34", "5, 55", "1-10", "any", "none". A bit complicated, but very easy to develop. Someone wanted the same, but I can't find his suggestion. Even if you don't want to support multiple number searching, the "any" and "none" is needed.
- Remove unused unusual effects. Like "Attrib_Particle2006", "Particle 1", "Holy Glow", ect. I don't know, why they're in the list right now.
- Add tradable/untradeable options. It's rejected, but it's the same as uncraftables. Useful for searching glitched items.
- Add strange part support (one item can have up to 3 strange parts). There're 16 pages of strange scattergun, and we don't want to view each trade if we're looking for one with dominations part.
- Halloween spell support. Already accepted.
- Search for kit, sheen. Although it's on the rejected list, Norby told me it's on the todo list, and since Sneeza fixed the sheen/killstreak names, it's just an attribute, like paint and australium.
- Allow to seach for sub items included gifts, chemistry sets, fabricators, strangifiers.esc. The "filterbox" isn't the best solution.
- Use JS-based popups instead of selects. The attribute box isn't so beautiful, you should redesing it.
- Add small icons to qualities, paints, unusual effects next to their name. (personally I don't know every paints' name :P)
- Add a "go back to the search page" button, so we don't need to fill it again if we want to change only one attribute.

Please, if you reject any of them, explain me why you don't want to add those features. It would be nice if you could add reasons to the Rejected Suggestions topic.