Try your search with a different keyword or use * as a wildcard.
@model ProductModel
    
        @T("Admin.Catalog.Products.SpecificationAttributes.Hint")
    
    @if (Model.Id > 0)
    {
        /*hide "add spec" table if no attributes are defined*/
        if (Model.HasAvailableSpecificationAttributes)
        {
            
                
                    @await Html.PartialAsync("Table", new DataTablesModel
                    {
                        Name = "specificationattributes-grid",
                        UrlRead = new DataUrl("ProductSpecAttrList", "Product", new RouteValueDictionary { [nameof(Model.ProductSpecificationAttributeSearchModel.ProductId)] = Model.ProductSpecificationAttributeSearchModel.ProductId }),
                        Length = Model.ProductPictureSearchModel.PageSize,
                        LengthMenu = Model.ProductPictureSearchModel.AvailablePageSizes,
                        ColumnCollection = new List
                        {
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.AttributeTypeName))
                            {
                                Title = T("Admin.Catalog.Products.SpecificationAttributes.Fields.AttributeType").Text,
                                Width = "150"
                            },
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.AttributeName))
                            {
                                Title = T("Admin.Catalog.Products.SpecificationAttributes.Fields.SpecificationAttribute").Text,
                                Width = "200"
                            },
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.ValueRaw))
                            {
                                Title = T("Admin.Catalog.Products.SpecificationAttributes.Fields.Value").Text,
                                Width = "200",
                                Encode = false
                            },
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.AllowFiltering))
                            {
                                Title = T("Admin.Catalog.Products.SpecificationAttributes.Fields.AllowFiltering").Text,
                                Width = "150",
                                ClassName = NopColumnClassDefaults.CenterAll,
                                Render = new RenderBoolean()
                            },
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.ShowOnProductPage))
                            {
                                Title = T("Admin.Catalog.Products.SpecificationAttributes.Fields.ShowOnProductPage").Text,
                                Width = "150",
                                ClassName = NopColumnClassDefaults.CenterAll,
                                Render = new RenderBoolean()
                            },
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.DisplayOrder))
                            {
                                Title = T("Admin.Catalog.Products.SpecificationAttributes.Fields.DisplayOrder").Text,
                                Width = "150",
                                ClassName =  NopColumnClassDefaults.CenterAll
                            },
                            new ColumnProperty(nameof(ProductSpecificationAttributeModel.Id))
                            {
                                Title = T("Admin.Common.Edit").Text,
                                Width = "100",
                                ClassName =  NopColumnClassDefaults.Button,
                                Render = new RenderButtonEdit(new DataUrl("~/Admin/Product/ProductSpecAttributeAddOrEdit?productId=" + Model.ProductSpecificationAttributeSearchModel.ProductId + "&specificationId=", true))  
                            }
                        }
                    })
                 
                
            
        }
        else
        {
            
                
                    @T("Admin.Catalog.Products.SpecificationAttributes.NoAttributes")
                
            
        }
    }
    else
    {
        
            
                @T("Admin.Catalog.Products.SpecificationAttributes.SaveBeforeEdit")
            
        
    }