Hello. This search engine is called 'Not-so-heavy' because there was another one called 'Heavy', it's a long story. Anyway, just put your searchwords into the form. Search is NOT case-sensitive. If you don't have priority code, you have to leave priority code field empty, or you get undefined results. The size of the resulting query form must not exceed 300 bytes.
You can contact admin somewhere on Runion at lwplxqzvmgu43uff.onion