I used to have a contact for Chambers where I could ask for words which completed a phrase - type in one word and then ask for words which go with it of various length (if you see what I mean!).
I've looked on Chambers site but can't see if it's still available.
Help appreciated.
-Thank you. The phrases one is good and very helpful. The Chambers one from mazie is very similar to the site I used to have, but there used to be an option to put in a word and then the number of letters of words connected to it.