I use Toodledo to drop down my notes. I found that it is useful though its feature is very native. I enjoy it much especially for the simple text based note in compared to those with full set of fancy features like Evernotes.
But I found that it is really useful to add tagging feature (like the tagging in task). It really helps in locating the notes in future. Moreover, it is even better if it can support auto suggestions and hint for historical tags as well.
I tried to search in history page. When I click on add rule, with Match "All" of the following criteria selected, the added rule is joined with "OR" operator. I alo tried to select Match "Any", the operator becomes "AND" instead.