Searching stories on mugglenet fanfiction is a bit of a pain. You can only set it for raitings, warnings, alphabeticaly or most recent, or completed, work in progress, and all stories. Personally I hate looking at hundreds of one shots before even getting to a story with more then 2000 words.
I think that a word count should be added to the search. ranging from 0-1000, 1001-5000, and so on. I think that it would help the search for a good story much shorter.
Such a function already exists. It's beneath the "warnings to include" and "warnings to exclude" boxes, next to "completed only". You can change the word count minimum and maximum, so the stories that will come up are then in-between your choices.