Weird Search Module Behaviour

Not sure what to make of this…

Try typing in request for service ie: https://warrenshirecouncil.trialsite.co/search-results?SearchKeyword=Request+for+Service

Into the search box and for some reason the page named Request for service does not appear at the top or even in the first page of the results.
(This page: https://warrenshirecouncil.trialsite.co/residents/request-for-service)

I have checked and the page IS enabled for site search and is not behind a secure zone.

Is there something funky going on with the search algorithm?
I have also triggered a re-index.

This is the component call on the results page:

 {% component type: "site_search", source: "Page", object: "item", layout: "Site Search List", displayPagination: "true" %} 

I reckon it’s something to do with the search results being sorted alphabetically (rather than by relevancy).
Most of the results look to be in alpha order (not sure why some aren’t though).

As far as I can see, this page https://warrenshirecouncil.trialsite.co/residents/request-for-service
could be found on the page #7 (https://warrenshirecouncil.trialsite.co/search-results?SearchKeyword=Request+for+Service&page=7&prop_ModuleId=1522)

Search results are shown sorted by weight DESC and alphabetically ASC by default.
You may apply your own sorting via sortBy and sortOrder component params.