Manuscript supports integrating directly with Twitter to capture any tweets you need as Manuscript cases. You can enable it for your team in the Avatar Menu -> Integrations.

Once enabled, Manuscript will automatically create new cases whenever a tweet matching your search is found. You can customize your Twitter search as outlined on the integration’s configuration page, and can even test your search before saving to make sure you’re getting the tweets you want:

You can read more about integrations here.