eJourn does not at this time support complex searches. For example. If you search for: "this and that." eJourn will:
1.) Search for this, fill results
2.) Search for and, fill results
3.) Search for that, fill results
4.) Search for "this and that", fill results.
An occurance of "this and that" will be seen as having four occurances, one for this, one for and, one for that, and one for "this and that." And occurance of "and" will be seen as having one occurance.
Things like "", +, &, *, ?; these are not supported. They likely will be someday. And it'd be a wonderful feature for someone to write for me :).