I have a client who is a lawyer that specializes in Criminal Defense and DUI, however, he does not show up well in Google. In researching the sites that rank better have much more content for those specialties than his site does and my thought it that he needs to add more quality content to rank better for those searches.

On his site he mentions his specialties, but also he has various personal things on his sites that reflect his interest. These are clearly separated from the business portion.

My questions are should he 1) separate his personal information into a new domain and 2) should he have a separate URL for each of his specialties? OR would one URL work as long as everything is clearly separated?

I read once that for legal services to rank well you should make a separate site for each specialty and have that site focus solely on that service.