My wife looking for a job as a remote/telecommuting/virtual executive/administrative assistant. So rather than creating a overly complex search, she's using multiple searches. Each opens on its own tab with a single click. It's shown itself to be much better targeted, but it may lose a few postings.
The old way was something like: remote or virtual or telecommute executive or admin or administrative assistant CEO or CFO or COO or president or VP.
It showed things like Remote control manufacturer seeking a sales assistant.......
Now she's doing something like: "remote executive assistant" or "virtual executive assistant" etc. in one search and "remote administrative assistant" etc. in another. There are over a dozen searches each with about five or clauses, but it's cut WAY down on the sifting.
This was not exactly what you were asking for, but it may give you a better way to form you searches.