You might find better chances if you accept non-native English writers but with good written English skills. I'll personally contact you if your offer is good.
What kind of payment you're offering here? If it's BTC, posting on the Services section might help with the exposure.
I second this opinion. Being from Docnaster I can say that being from this town that some of us have shitty English skills compared to our Indian and Asian neighbors. Of course, you cannot expect this from 100% of non native speakers, nothing can be generalized. For instance, I have a great set of teeth.
I suggest you look into those service provider threads and contact the listed people from there. Better than waiting to be contacted by unskilled people.