code: public static String replaceNorwegianLetters(CharSequence text) {
  		Pattern norwegianLettersPattern = Pattern.compile("\u00F8|\u00D8|\u00E6|\u00C6|\u00E5|\u00C5");
  		Matcher norwegianLetterMatcher = norwegianLettersPattern.matcher(text);
  		StringBuffer replacedText = new StringBuffer();
  		while (norwegianLetterMatcher.find()) {
  			norwegianLetterMatcher.appendReplacement(replacedText, replacements.get(norwegianLetterMatcher.group()));
  		}
  		norwegianLetterMatcher.appendTail(replacedText);
  		return replacedText.toString();
  	}
docs: Replaces the norwegian letters 'æ/Æ', 'ø/Ø' and 'å/Å' with their English
  substitutes ae/Ae, oe/Oe and aa/Aa.
  
  @param text
  The text containing the Norwegian letters to replace
  @return A text with all Norwegian letters replaced by their respective
  substitutes.