Go to Monitoring > Social Monitoring > New.

Select Twitter Mention as the Monitoring Method.Type the twitter mention you wish to monitor in the Twitter Mention box and the description
Name the monitor and click save.

As people use the hashtag or mention that you’re monitoring, you’ll see them being added to your contact list. From there you can use that information in a Campaign.

NOTE: – You may configure the Twitter plugin and setup the social CRON to make it work