Как дождаться полной загрузки пейджи и сортировки курсов с js. Selenium, java

Test page https://www.udacity.com/courses/all

My wait code sometimes work sometimes not. Need to wait load page and sort list of courses finish. After i make search.

My Wait code.

    public void getForAllElem(){
    try {
        wait.until(ExpectedConditions.numberOfElementsToBe(By.xpath("//div[@class='card-content']"), 230));
        List<WebElement> listOfNames = driver.findElements(By.xpath("//div[@class='card-content']//a"));
        wait.until(ExpectedConditions.elementToBeClickable(listOfNames.get(0)));
    }catch (StaleElementReferenceException e){
        getForAllElem();
    }
}