I'm trying to create a simple reusable search using LINQ to SQL.

I pass in a list of words entered in a search box. The results are then filtered based on this criteria.

  private IQueryable<User> BasicNameSearch(IQueryable<User> usersToSearch, ICollection<string> individualWordsFromSearch)
  {
        return usersToSearch
            .Where(user => 
            individualWordsFromSearch.Contains(user.Forename.ToLower()) 
            || individualWordsFromSearch.Contains(user.Surname.ToLower()));
  }

Now I want this same search functionality on a different datasource and want to dynamically select the fields to apply the search to. For instance instead of IQueryable of Users I may have an IQueryable of Cars and instead of firstname and surname the search goes off Make and Model. Basically the goal is to reuse the search logic by dynamically selecting what to search on at runtime.