import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    String inputText = "I want to know relating to cloud based erp services.";
		Set<String> words = new HashSet<String>();
		words.add("erp");
		words.add("cloud");
 
        Pattern p = Pattern.compile("^(?=.*" + String.join(")(?=.*", words) + ")", Pattern.CASE_INSENSITIVE|Pattern.DOTALL);
        System.out.println(p.toString());
 
        Matcher m = p.matcher(inputText);
        if (m.find()) 
        {
           System.out.println("Yes we providing it.");
       }
	}
}

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