private String cleanVersionTitle(String title) {
		String newTitle = title;
		String t = newTitle.toLowerCase();
		if (t.charAt(0) == newTitle.charAt(0)) {
			Log.e("Please check if this really a title: " + newTitle
					+ ". If it is, please write the first letter in capital case.");
		}
		if (newTitle.contains("=")) {
			newTitle = newTitle.replaceAll("\\s=\\s", "="); // replace "C = 1" to "C=1", this way it will be recognize as one word;
			String[] arr = newTitle.split("\\s");
			String sequence = "";
			for (String s : arr) {
				if (s.contains("=")) {
					sequence = s;
				}
			}
			newTitle = newTitle.replaceAll(sequence, "");
			Log.p("Remove " + sequence + " from title: " + title + " => " + newTitle);
		}
		if (newTitle.matches(".*\\d\\s*+\\s*/\\d+.*")) {
			newTitle = newTitle.replaceAll("\\d\\s*+\\s*/\\d+", "");
			Log.p("Remove N/N from title: " + title + " => " + newTitle);
		}
		if (newTitle.contains("/")) {
			newTitle = newTitle.replace('/', '&');
			Log.p("Replace char / with & in title: " + title + " => " + newTitle);
		}
		return newTitle.trim();
	}