How we can chose the right candidate for a job other than the interview, some people have lack of communication but hard strong performers?

Try CBA model of interviewing to eliminate unfit staff recruitment. And if the candidate lacks good communication skills, create an environment for him/her to answer at own pace.  If the job requires minimum communication standards, you may not have much options but to conduct interview at those desired level.

Apart from CBA, try Thinking Pattern profiling as well.