Not sure how you guys are searching, but....
Yahoo!
Then click the diameter you want. Then I usually type in 10J, or 10.5J, or whatever and it'll pull up some stuff. If you're looking for a specific brand you should be able to find a shitty set and look at the kanji and find the symbols for the wheel type itself.
For example, I looked at enough minervas to figure out this: ミネルバ was minerva.
Some wheels like equips and SLs and Angel Strusse use English words, so try and use simple version of it. Like search SSR Angel or SSR Strusse. Just from searching SSR Strusse I found an auction that, when translated, the title was SSR Angel Strusse in kanji: SSR エイグル ストラッセ