I have already addressed a few post yesterday regarding the same type of problem.
Don't like to sound repetative and I don't sell them!
But speaking from experience, I put a kitchen up in my house about 5 years ago and that had stud hollow walls. I used what's called "Hollow Wall Anchors" They came in all type weight duties. Available from DIY stores, builders merchant, iron mongers and so on. The good news for both of us is; that my wall units are still up and full of cups, plates, glasses etc....
So I'd recommend them with confidence.
Hope this was of use
Kind Regards and Good Luck
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