It's still a shame that you haven't used spellcheck in your titles and it's still a shame that people won't find your shin guards. I highly doubt anyone is going to search for "guards" if looking for shin guards. If they did, they are going to end up with a million results and who knows where yours would show up. They'd have to sift through all the car guards and other guards first. Put shin back in the title and a brand if they have one. I'd also put if they were new or used in the title.
You have 80+ characters for the title, why not use them? And use spellcheck. If a word has a squiggly red line under it, you've spelt it wrong. You might want to look at your photo enlarger. You have a spelling error in the title. Most people would be looking for a photo enlarger, rather than a film enlarger. You could use both words to capture both searches "photo film enlarger". You want as many keywords in the title to capture all types of search terms buyers might use, even if the title makes no sense. It's all about the keywords to capture as much exposure as you can.
The oil cans, I'd be adding vintage and retro to the title if they are more than 30 years old. Some people will just search for "vintage", just to see what's around that might take their fancy.
