RE: Announcing Bot Libre 6.5 - Deep learning, conversation flows, new training editor, synonyms, sentiment

Bot Libre 6.5 has synonyms, so you could add those word variations as synonyms. Your bot can also auto import synonyms from Wiktionary.

You could also use a pattern,

Pattern("[how what] * [student students] * [register registration registering] *")

In Bot Libre 7.0 you will also be able to use required word sets.

i.e.
How does student register?
#student-response
keywords: student students register registration registering
required: (student students) (register registration registering)