public class Test25 {

    public static void main(String[] arg) {

        String str = "Life likes using google, you need to know what you are searching for, ing.";
        String[] strs = str.split("(?i)[^a-zA-Z0-9\u4E00-\u9FA5]");
        for (String s : strs) {
            if (s.contains("ing"))
                System.out.println(s);
        }
    }
}

------解决方案--------------------
		Pattern p = Pattern.compile("(([a-zA-Z]*)?ing)\\b");
		String str = "Life likes using google, you need to know what you are searching for, ing.";
		Matcher m = p.matcher(str);
		while(m.find()){
			System.out.println(m.group());
		}