When searching and the need arises for LIKE '%query%' using Linq to SQL, use below:

        [Route("search")]
        [HttpPost]
        public IActionResult Search(string search)
        {
            var posts = _db.Posts
                .Where(x => x.Body.Contains(search))
                .Where(x => x.Title.Contains(search)).ToArray();

            ViewBag.SearchCriteria = search;
            ViewBag.TagView = new TagView(_db);

            return View(posts);
        }

Older/Redacted code

using System.Data.Linq.SqlClient;
result = (from b in db.Blogs
   where SqlMethods.Like(b.Title, "%" + keyword + "%") ||  
   SqlMethods.Like(b.Body, "%" + keyword + "%")  
   orderby b.AddedDate descending
   select b);