How to modify the search reg-ex?

Thanks for making this worklflow!

I'd like to change the way multiple search terms are handled. I'm new to python but I traced my way to the [`zh` script](https://github.com/deanishe/zothero/blob/master/src/zh) but from there I figured I need to go to the `zothero` module and find `app` in it. But I haven't been able to figure out where that module is. Python doesn't seem to know of it. What am I missing? Could you give me a pointer?

In case you are wondering what I want to change: let's say I have a Zotero reference with the title "Quick brown fox". I would want that to be in the search results when I search for `qui fo`. Currently, `quick fo` will work, but not `quick fo ` (note the space at the end).