How to find child elements in Selenium Web driver

When same object is getting duplicated for N number of parent, then user can refer parent and child relationship to identify the object in browser.

WebElement bodyElement = driver.findElement(By.id("body"));
WebElement bodyElement1 = bodyElement.findElement(By.id("body"));
System.out.println(bodyElement1.findElement(By.id("TotalScore")).getText());

User want to read all child elements of div(parent) container by using following methods.

WebElement bodyElement = driver.findElement(By.id("body"));   
List divElements = bodyElement.findElements(By.className("div"));
for(WebElement childDiv : divElements){
 List fieldSetEle = childDiv.findElements(By.tagName("fieldset"));
 System.out.println(childDiv.getTagName()+":"+fieldSetEle.size());
    }