help with phrases configuration

[buildvoc at gmail.com]

Good morning I am new to setting up xapian.

Currently xapian is running on eprints document repository. We are using
this repo for storing guidance documents in the built environment.

 

Have a field which has phrases separated by commas, which like to index the
whole phrase.

For example :-

evacuation lift, part b - fire safety, b5 access and facilities for the fire
service, fire risk assessment, residual risk, building safety, b4 external
fire spread, means of escape, principal works, health & safety strategy
https://eprints.buildvoc.co.uk/id/eprint/865/

 

Question how do I configure xapian to index the whole phrase instead of the
individual terms for example fire, safety, or building