Relevant parameters from my project:
- HTML5 target
MadCap Search is the selected search engine
I do NOT have ""Exclude non-words" checked in the advanced search options for the target.
This is an existing bug in our system. Regarding this issue, I have submitted a Bug Report on your behalf (#149209) to our development team and you will be notified via email if a fix for this is included in a future patch or release version.
Unfortunately, we can't provide any workaround for this issue except to change the Search Engine used in the output from MadCap Search.